Update plugin docs for the covering of remote plugins (#20188).
Update plugin docs for the covering of remote plugins (#20188).

This fix updates the Plugin API docs to cover the case of remote
plugins which could be deployed on a host different from the
docker host, through spec or json files.

This fix closes #20188.

Signed-off-by: Yong Tang <765086fe2e0c1f980161f127fec596800f327f62@outlook.com>

sunyuan3/docker,nawawi/docker,errordeveloper/docker,tmp6154/docker,cloudflare/docker,bonczj/moby-json-file-logger,cyli/docker,ffoysal/docker,BenHall/docker,shin-/docker.github.io,mahak/docker,gnailuy/docker,TheBigBear/docker,diogomonica/docker,rremer/moby,mstanleyjones/docker,HideoYamauchi/docker,moby/moby,shhsu/docker,achanda/docker,zhuguihua/docker,mkumatag/docker,jzwlqx/denverdino.github.io,maxamillion/docker,rancher/docker,OnePaaS/docker,danyalKhaliq10p/moby,akira-baruah/docker,maxamillion/docker,noironetworks/docker,gigidwan/docker,BSWANG/denverdino.github.io,gnailuy/docker,endophage/docker,aduermael/docker.github.io,sterchelen/docker,cpuguy83/docker,geekylucas/docker,joeuo/docker.github.io,PatrickLang/moby,kolyshkin/moby,xiaods/docker,errordeveloper/docker,kerneltime/docker,jhorwit2/docker,nghiant2710/docker,ajaymdesai/docker,cyphar/docker,johnstep/docker.github.io,OnePaaS/docker,gjaskiewicz/moby,dims/docker,denverdino/docker.github.io,yosifkit/docker,jlebon/docker,vdemeester/docker,mtanlee/docker,laijs/moby,djs55/docker,allencloud/docker,kerneltime/docker,pyotr777/docker,alexisbellido/docker.github.io,michelvocks/docker,gdevillele/docker.github.io,LuisBosquez/docker.github.io,mixja/docker,yummypeng/docker,13W/docker,cpuguy83/docker,Morsicus/docker,AkihiroSuda/docker,scollier/docker,nalind/docker,docker/docker,rancher/docker,darrenstahlmsft/moby,sarnautov/moby,mohmost12/docker,tklauser/docker,anweiss/docker.github.io,rremer/moby,errordeveloper/docker,containers/storage,afein/docker,mtrmac/docker,tmp6154/docker,moul/docker,BSWANG/denverdino.github.io,kunalkushwaha/docker,catinthesky/docker,laijs/moby,hqhq/moby,Microsoft/docker,gdevillele/docker.github.io,pyotr777/docker,projectatomic/docker,sean-jc/docker,KarthikNayak/docker,willmtemple/docker,rkazak/docker,mikedougherty/docker,dmcgowan/docker,icaoweiwei/docker,SvenDowideit/docker,imkin/moby,Mashimiao/docker,mohmost12/docker,sheimi/docker,thaJeztah/docker,shishir-a412ed/docker,bfirsh/docker,joeuo/docker.github.io,kencochrane/docker,fcrisciani/docker,pyotr777/docker,xiekeyang/docker,charleszheng44/moby,tophj-ibm/moby,anweiss/docker.github.io,twaugh/docker,shhsu/docker,pradipd/moby,tmp6154/docker,cpuguy83/docker,rkazak/docker,mahak/docker,YujiOshima/docker,pecameron/docker,moxiegirl/docker,qudongfang/docker,Ramzec/docker,raja-sami-10p/moby,kencochrane/docker,denverdino/docker.github.io,JMesser81/docker,madhanrm/docker,rhatdan/docker,sheimi/docker,q384566678/docker,estesp/docker,haveatry/docker,tophj-ibm/docker,cr7pt0gr4ph7/docker,dongjoon-hyun/docker,docker/docker.github.io,stevvooe/docker,prertik/docker,mikebrow/docker,Mokolea/docker,moul/docker,jameszhan/docker,cr7pt0gr4ph7/docker,hqhq/moby,laijs/docker,gschaetz/moby,moypray/docker,cyphar/docker,anweiss/docker.github.io,DoraALin/docker,harche/docker,ibuildthecloud/docker,anujbahuguna/docker,yosifkit/docker,darrenstahlmsft/moby,13W/docker,noironetworks/docker,paralin/docker,Mashimiao/docker,thaJeztah/docker.github.io,inatatsu/docker,q384566678/docker,runcom/docker,phiroict/docker,mathewkoshy493/docker,icaoweiwei/docker,13W/docker,sarnautov/moby,thaJeztah/docker.github.io,menglingwei/denverdino.github.io,crosbymichael/docker,bluebreezecf/docker,shubheksha/docker.github.io,srust/docker,yosifkit/docker,flavio/docker,xuxinkun/docker,BSWANG/denverdino.github.io,14rcole/docker,Shopify/docker,thaJeztah/docker,imkin/moby,londoncalling/docker.github.io,Mokolea/docker,jthelin/docker,rillig/docker.github.io,gdevillele/docker.github.io,trebonian/docker,denverdino/docker.github.io,anweiss/docker.github.io,estesp/docker,docker/docker.github.io,miminar/docker,hqhq/moby,dsau/docker,isubuz/docker,ColinHebert/docker,madhanrm/docker,rhardih/docker,jongiddy/docker,denverdino/denverdino.github.io,jwhonce/docker,noxiouz/docker,msabansal/docker,jlhawn/docker,TrumanLing/docker,noxiouz/docker,prertik/docker,geekylucas/docker,tophj-ibm/moby,dgageot/docker,tkopczynski/docker,mstanleyjones/docker,msabansal/docker,tophj-ibm/moby,thaJeztah/docker.github.io,sarnautov/moby,kunalkushwaha/docker,splunk/docker,mtanlee/docker,michelvocks/docker,troy0820/docker.github.io,LuisBosquez/docker.github.io,moby/moby,srust/docker,johnstep/docker.github.io,dsau/docker,bluebreezecf/docker,djs55/docker,sanjeo/docker,asbjornenge/docker,bfirsh/docker,bearstech/moby,mtrmac/docker,fcrisciani/docker,darrenstahlmsft/moby,gdevillele/docker.github.io,moul/docker,kunalkushwaha/docker,tianon/docker,jzwlqx/denverdino.github.io,mixja/docker,docker-zh/docker.github.io,JMesser81/docker,AkihiroSuda/docker,docker/docker.github.io,dccurtis/docker,jimjag/docker,x1022as/docker,tagomoris/docker,londoncalling/docker.github.io,qudongfang/docker,lixiaobing10051267/docker,whuwxl/docker,crosbymichael/docker,jecarey/docker,jzwlqx/denverdino.github.io,harche/docker,medallia/docker,portworx/docker,srust/docker,q384566678/docker,joaofnfernandes/docker.github.io,konstruktoid/docker-1,13W/docker,yongtang/docker,konstruktoid/docker-upstream,sean-jc/docker,POLJM242/docker,endophage/docker,nguyentm83/docker,erikstmartin/docker,joaofnfernandes/docker.github.io,tklauser/docker,14rcole/docker,diogomonica/docker,yp-engineering/docker,LaynePeng/docker,lixiaobing1/docker,rillig/docker.github.io,nawawi/docker,ibuildthecloud/docker,denverdino/denverdino.github.io,dnephin/docker,cyli/docker,dongjoon-hyun/docker,sanscontext/docker.github.io,sdurrheimer/docker,BenHall/docker,mahak/docker,cloudflare/docker,trebonian/docker,charleszheng44/moby,sfsmithcha/docker,konstruktoid/docker-upstream,mtanlee/docker,yosifkit/docker,geekylucas/docker,danix800/docker.github.io,LuisBosquez/docker.github.io,sunyuan3/docker,mkumatag/docker,jameszhan/docker,akira-baruah/docker,scotttlin/docker,tonistiigi/docker,bearstech/moby,jhorwit2/docker,eskaaren/docker,Tenk42/docker,jlhawn/docker,paralin/docker,bonczj/moby-json-file-logger,moxiegirl/docker,isubuz/docker,bdwill/docker.github.io,projectatomic/docker,charleswhchan/docker,toli/docker,LaynePeng/docker,shubheksha/docker.github.io,zhuguihua/docker,alfred-landrum/docker,wenchma/docker,ndeloof/docker,sfsmithcha/docker,Microsoft/docker,justyntemme/docker,inatatsu/docker,pradipd/moby,HideoYamauchi/docker,JimGalasyn/docker.github.io,Ramzec/docker,tophj-ibm/docker,Syntaxide/docker,dgageot/docker,docker-zh/docker.github.io,mgoelzer/docker,hypriot/docker,bluebreezecf/docker,michael-holzheu/docker,jzwlqx/denverdino.github.io,JimGalasyn/docker.github.io,johnstep/docker.github.io,Morsicus/docker,alexisbellido/docker.github.io,resin-io/docker,dims/docker,KingEmet/docker,dgageot/docker,ffoysal/docker,jlhawn/docker,Altiscale/docker,dperny/docker,tianon/docker,anujbahuguna/docker,dperny/docker,sanscontext/docker.github.io,jimjag/docker,gjaskiewicz/moby,bearstech/moby,denverdino/docker.github.io,ajaymdesai/docker,menglingwei/denverdino.github.io,LuisBosquez/docker.github.io,lixiaobing1/docker,ripcurld0/moby,shishir-a412ed/docker,willmtemple/docker,unclejack/docker,justincormack/docker,erikh/docker,pramodhkp/moby,mike1729/docker,JimGalasyn/docker.github.io,dsheets/moby,abhinavdahiya/docker,djs55/docker,kojiromike/docker,thtanaka/docker,konstruktoid/docker-upstream,sheimi/docker,gschaetz/moby,TheBigBear/docker,nalind/docker,paralin/docker,bdwill/docker.github.io,trebonian/docker,gnailuy/docker,xiaods/docker,dperny/docker,portworx/docker,TrumanLing/docker,mikebrow/docker,mohmost12/docker,jvanz/docker,laijs/docker,Shopify/docker,KarthikNayak/docker,phiroict/docker,jecarey/docker,bdwill/docker.github.io,Shopify/docker,moypray/docker,miminar/docker,pecameron/docker,nawawi/docker,dsau/docker,pramodhkp/moby,lixiaobing10051267/docker,sfsmithcha/docker,stainboy/docker,mikedougherty/docker,naveed-jamil-tenpearls/moby,ndeloof/docker,stainboy/docker,charleswhchan/docker,umerazad/docker,yongtang/docker,estesp/docker,yasiramin10p/moby,rillig/docker.github.io,moypray/docker,londoncalling/docker.github.io,icaoweiwei/docker,brahmaroutu/docker,asbjornenge/docker,cr7pt0gr4ph7/docker,pramodhkp/moby,ajaymdesai/docker,shhsu/docker,Ramzec/docker,tkopczynski/docker,xiekeyang/docker,ColinHebert/docker,scotttlin/docker,JimGalasyn/docker.github.io,flavio/docker,thaJeztah/docker,jameszhan/docker,toli/docker,yasiramin10p/moby,trebonian/docker,yp-engineering/docker,coolljt0725/docker,jlebon/docker,jwhonce/docker,scollier/docker,JMesser81/docker,LuisBosquez/docker.github.io,coreos/docker,x1022as/docker,docker/docker.github.io,rhatdan/storage,Mokolea/docker,troy0820/docker.github.io,dnephin/docker,mgoelzer/docker,sanjeo/docker,KingEmet/docker,londoncalling/docker.github.io,phiroict/docker,menglingwei/denverdino.github.io,yongtang/docker,imkin/moby,whuwxl/docker,dccurtis/docker,mstanleyjones/docker,BenHall/docker,lixiaobing1/docker,aduermael/docker.github.io,unclejack/docker,shubheksha/docker.github.io,lixiaobing10051267/docker,unclejack/docker,darrenstahlmsft/docker,mike1729/docker,johnstep/moby-moby,sterchelen/docker,denverdino/denverdino.github.io,x1022as/docker,anujbahuguna/docker,rkazak/docker,liaoqingwei/docker,abhinavdahiya/docker,justincormack/docker,gjaskiewicz/moby,joeuo/docker.github.io,laijs/moby,gigidwan/docker,mkumatag/docker,Tenk42/docker,ffoysal/docker,docker-zh/docker.github.io,tkopczynski/docker,containers/storage,PatrickLang/moby,vdemeester/docker,johnstep/docker.github.io,jthelin/docker,michelvocks/docker,Mokolea/docker,nawawi/docker,Morsicus/docker,erikh/docker,xiekeyang/docker,joeuo/docker.github.io,cyli/docker,scotttlin/docker,mikebrow/docker,mathewkoshy493/docker,shubheksha/docker.github.io,dongjoon-hyun/docker,danyalKhaliq10p/moby,sanscontext/docker.github.io,mike1729/docker,rhatdan/docker,naveed-jamil-tenpearls/moby,AkihiroSuda/docker,justyntemme/docker,gdevillele/docker.github.io,stevvooe/docker,gnailuy/docker,twaugh/docker,moby/moby,sdurrheimer/docker,joaofnfernandes/docker.github.io,rremer/moby,AkihiroSuda/docker,Microsoft/docker,gschaetz/moby,justyntemme/docker,resin-io/docker,jimjag/docker,anweiss/docker.github.io,rhatdan/docker,Altiscale/docker,alfred-landrum/docker,docker/docker.github.io,zhuguihua/docker,prertik/docker,pradipd/moby,sanscontext/docker.github.io,haveatry/docker,achanda/docker,denverdino/docker.github.io,ndeloof/docker,paralin/docker,tklauser/docker,afein/docker,fcrisciani/docker,PatrickLang/moby,nalind/docker,amatsus/docker,shin-/docker.github.io,isubuz/docker,Mashimiao/docker,shin-/docker.github.io,YuPengZTE/docker,michael-holzheu/docker,dsheets/moby,bonczj/moby-json-file-logger,noironetworks/docker,coreos/docker,mtesselH/docker,jongiddy/docker,sean-jc/docker,hypriot/docker,umerazad/docker,nghiant2710/docker,joaofnfernandes/docker.github.io,rhatdan/storage,containers/storage,aduermael/docker.github.io,allencloud/docker,endophage/docker,rancher/docker,justincormack/docker,POLJM242/docker,kolyshkin/moby,rillig/docker.github.io,sanscontext/docker.github.io,charleszheng44/moby,ColinHebert/docker,crosbymichael/docker,gigidwan/docker,alfred-landrum/docker,menglingwei/denverdino.github.io,naveed-jamil-tenpearls/moby,whuwxl/docker,yummypeng/docker,twaugh/docker,medallia/docker,liaoqingwei/docker,noxiouz/docker,YuPengZTE/docker,londoncalling/docker.github.io,raja-sami-10p/moby,eskaaren/docker,SvenDowideit/docker,charleswhchan/docker,duglin/docker,erikh/docker,resin-io/docker,dccurtis/docker,pecameron/docker,dims/docker,thaJeztah/docker.github.io,nghiant2710/docker,Syntaxide/docker,Altiscale/docker,shin-/docker.github.io,mtesselH/docker,thtanaka/docker,laijs/docker,phiroict/docker,liaoqingwei/docker,jvanz/docker,jwhonce/docker,darrenstahlmsft/docker,phiroict/docker,denverdino/denverdino.github.io,danix800/docker.github.io,splunk/docker,brahmaroutu/docker,johnstep/moby-moby,YujiOshima/docker,nguyentm83/docker,troy0820/docker.github.io,runcom/docker,runcom/docker,docker-zh/docker.github.io,thaJeztah/docker,shubheksha/docker.github.io,dmcgowan/docker,msabansal/docker,projectatomic/docker,tophj-ibm/docker,stainboy/docker,kojiromike/docker,diogomonica/docker,amatsus/docker,cyphar/docker,stevvooe/docker,xuxinkun/docker,yummypeng/docker,aduermael/docker.github.io,flavio/docker,HuKeping/docker,danyalKhaliq10p/moby,TheBigBear/docker,ibuildthecloud/docker,kerneltime/docker,bdwill/docker.github.io,bfirsh/docker,kolyshkin/docker,joeuo/docker.github.io,asbjornenge/docker,dsheets/moby,coolljt0725/docker,duglin/docker,Tenk42/docker,raja-sami-10p/moby,miminar/docker,coolljt0725/docker,cpuguy83/docker,afein/docker,medallia/docker,vdemeester/docker,YujiOshima/docker,thaJeztah/docker.github.io,konstruktoid/docker-1,umerazad/docker,nalind/docker,docker/docker,allencloud/docker,SvenDowideit/docker,qudongfang/docker,sdurrheimer/docker,moxiegirl/docker,BSWANG/denverdino.github.io,kolyshkin/moby,konstruktoid/docker-upstream,mikedougherty/docker,KarthikNayak/docker,erikstmartin/docker,troy0820/docker.github.io,michael-holzheu/docker,OnePaaS/docker,jimjag/docker,johnstep/docker.github.io,kojiromike/docker,jongiddy/docker,tonistiigi/docker,hypriot/docker,johnstep/moby-moby,tagomoris/docker,denverdino/denverdino.github.io,medallia/docker,coreos/docker,13W/docker,YuPengZTE/docker,tonistiigi/docker,thtanaka/docker,HuKeping/docker,alexisbellido/docker.github.io,rhardih/docker,achanda/docker,mtrmac/docker,madhanrm/docker,docker/docker,maxamillion/docker,jvanz/docker,JimGalasyn/docker.github.io,inatatsu/docker,harche/docker,ibuildthecloud/docker,joaofnfernandes/docker.github.io,danix800/docker.github.io,mahak/docker,mathewkoshy493/docker,wenchma/docker,KingEmet/docker,erikstmartin/docker,ripcurld0/moby,amatsus/docker,jhorwit2/docker,darrenstahlmsft/docker,DoraALin/docker,Syntaxide/docker,xiaods/docker,shishir-a412ed/docker,menglingwei/denverdino.github.io,alexisbellido/docker.github.io,LaynePeng/docker,moul/docker,mtesselH/docker,ibuildthecloud/docker,splunk/docker,sterchelen/docker,sunyuan3/docker,catinthesky/docker,HuKeping/docker,dmcgowan/docker,tagomoris/docker,alexisbellido/docker.github.io,sanjeo/docker,rhatdan/storage,eskaaren/docker,kencochrane/docker,mgoelzer/docker,xuxinkun/docker,jzwlqx/denverdino.github.io,catinthesky/docker,yp-engineering/docker,jlebon/docker,cloudflare/docker,ripcurld0/moby,abhinavdahiya/docker,duglin/docker,DoraALin/docker,docker-zh/docker.github.io,HideoYamauchi/docker,konstruktoid/docker-1,willmtemple/docker,bearstech/moby,mixja/docker,kolyshkin/docker,haveatry/docker,portworx/docker,toli/docker,yasiramin10p/moby,Ramzec/docker,wenchma/docker,BSWANG/denverdino.github.io,TrumanLing/docker,danix800/docker.github.io,moby/moby,brahmaroutu/docker,dnephin/docker,shin-/docker.github.io,flavio/docker,bdwill/docker.github.io