Fix typo in discovery documentation
Fix typo in discovery documentation

Signed-off-by: Felix Abecassis <a07e68a41ed3aea625f691f61ec4514b3d8f49bd@gmail.com>

denverdino/docker.github.io,shubheksha/docker.github.io,JimGalasyn/docker.github.io,fugr/swarm,schmunk42/swarm,CodeNow/swarm,joeuo/docker.github.io,phiroict/docker,moxiegirl/swarm,anweiss/docker.github.io,auzias/swarm,qianzhangxa/swarm,BSWANG/denverdino.github.io,LuisBosquez/docker.github.io,aduermael/docker.github.io,phiroict/docker,joeuo/docker.github.io,aduermael/docker.github.io,megamsys/swarm,docker/docker.github.io,sfsmithcha/swarm,rillig/docker.github.io,bdwill/docker.github.io,denverdino/denverdino.github.io,phiroict/docker,jzwlqx/denverdino.github.io,gradywang/swarm,CodeNow/swarm,shin-/docker.github.io,londoncalling/docker.github.io,JimGalasyn/docker.github.io,troy0820/docker.github.io,allencloud/swarm,BSWANG/denverdino.github.io,BSWANG/denverdino.github.io,qianzhangxa/swarm,kyhavlov/swarm,denverdino/denverdino.github.io,joaofnfernandes/docker.github.io,denverdino/docker.github.io,JimGalasyn/docker.github.io,resouer/swarm,kyhavlov/swarm,joeuo/docker.github.io,LuisBosquez/docker.github.io,BSWANG/denverdino.github.io,ezrasilvera/swarm,troy0820/docker.github.io,aduermael/docker.github.io,docker-zh/docker.github.io,kunalkushwaha/swarm,kunalkushwaha/swarm,LuisBosquez/docker.github.io,alexisbellido/docker.github.io,doronp/swarm,johnstep/docker.github.io,rillig/docker.github.io,resouer/swarm,cpuguy83/swarm,barais/swarm,bdwill/docker.github.io,cpuguy83/swarm,linecheng/swarm,shubheksha/docker.github.io,swarm-hooks/swarm,menglingwei/denverdino.github.io,anweiss/docker.github.io,liubin/swarm,menglingwei/denverdino.github.io,joeuo/docker.github.io,alexisbellido/docker.github.io,johnstep/docker.github.io,denverdino/docker.github.io,riuvshin/swarm,rancher/swarm,jzwlqx/denverdino.github.io,alexisbellido/docker.github.io,londoncalling/docker.github.io,bdwill/docker.github.io,riuvshin/swarm,danix800/docker.github.io,denverdino/docker.github.io,linecheng/swarm,troy0820/docker.github.io,docker/docker.github.io,ch3lo/swarm,danix800/docker.github.io,docker/docker.github.io,gdevillele/docker.github.io,danix800/docker.github.io,joaofnfernandes/docker.github.io,shin-/docker.github.io,jimmycmh/swarm,rillig/docker.github.io,joaofnfernandes/docker.github.io,anweiss/docker.github.io,echupriyanov/swarm,rchicoli/swarm,swarm-hooks/swarm,danix800/docker.github.io,shubheksha/docker.github.io,CiaranCostello/swarm,JimGalasyn/docker.github.io,alexisbellido/docker.github.io,BSWANG/swarm,thaJeztah/docker.github.io,shubheksha/docker.github.io,docker-zh/docker.github.io,MHBauer/swarm,gradywang/swarm,rchicoli/swarm,docker-zh/docker.github.io,CiaranCostello/swarm,barais/swarm,denverdino/denverdino.github.io,allencloud/swarm,shin-/docker.github.io,sanscontext/docker.github.io,mgoelzer/swarm,LuisBosquez/docker.github.io,sanscontext/docker.github.io,troy0820/docker.github.io,MHBauer/swarm,gdevillele/docker.github.io,xFragger/swarm,menglingwei/denverdino.github.io,atlassian/swarm,docker-zh/docker.github.io,sanscontext/docker.github.io,shin-/docker.github.io,jzwlqx/denverdino.github.io,atlassian/swarm,menglingwei/denverdino.github.io,phiroict/docker,docker/docker.github.io,joaofnfernandes/docker.github.io,Spritekin/swarm,gdevillele/docker.github.io,aduermael/docker.github.io,londoncalling/docker.github.io,BSWANG/swarm,gdevillele/docker.github.io,phiroict/docker,thaJeztah/docker.github.io,auzias/swarm,alexisbellido/docker.github.io,anweiss/docker.github.io,Spritekin/swarm,docker/docker.github.io,jzwlqx/denverdino.github.io,LuisBosquez/docker.github.io,fugr/swarm,megamsys/swarm,LukasBacigal/swarm,sanscontext/docker.github.io,johnstep/docker.github.io,bdwill/docker.github.io,londoncalling/docker.github.io,JimGalasyn/docker.github.io,mgoelzer/swarm,rancher/swarm,LukasBacigal/swarm,denverdino/denverdino.github.io,jimmycmh/swarm,morpheyesh/swarm,ch3lo/swarm,jzwlqx/denverdino.github.io,shubheksha/docker.github.io,joaofnfernandes/docker.github.io,thaJeztah/docker.github.io,rillig/docker.github.io,xFragger/swarm,thaJeztah/docker.github.io,bdwill/docker.github.io,echupriyanov/swarm,ezrasilvera/swarm,joeuo/docker.github.io,gdevillele/docker.github.io,anweiss/docker.github.io,denverdino/docker.github.io,shin-/docker.github.io,johnstep/docker.github.io,docker-zh/docker.github.io,moxiegirl/swarm,liubin/swarm,sanscontext/docker.github.io,doronp/swarm,denverdino/denverdino.github.io,johnstep/docker.github.io,thaJeztah/docker.github.io,londoncalling/docker.github.io,BSWANG/denverdino.github.io,morpheyesh/swarm,sfsmithcha/swarm,menglingwei/denverdino.github.io,schmunk42/swarm