doc: fix couple of issues for the doc of agnhost
doc: fix couple of issues for the doc of agnhost

- The code for google analytics is not well-formatted, which cause its not
rendered well and properly not work as expected.

- webhook v1beta1 is out, the `TODO` in the guide could be removed.

Signed-off-by: Dave Chen <3fbbe9d8910afe5176d6dd2fc1de9e5729a30247@arm.com>

mengqiy/kubernetes,hex108/kubernetes,cofyc/kubernetes,jessfraz/kubernetes,nikhita/kubernetes,ingvagabund/kubernetes,weiwei04/kubernetes,dlorenc/kubernetes,cofyc/kubernetes,rrati/kubernetes,wenlxie/kubernetes,shyamjvs/kubernetes,olivierlemasle/kubernetes,joelsmith/kubernetes,mosoft521/kubernetes,mboersma/kubernetes,li-ang/kubernetes,cblecker/kubernetes,mml/kubernetes,nak3/kubernetes,DiamantiCom/kubernetes,dlorenc/kubernetes,monopole/kubernetes,weiwei04/kubernetes,openshift/kubernetes,cmluciano/kubernetes,jackfrancis/kubernetes,tengqm/kubernetes,dereknex/kubernetes,fejta/kubernetes,kpgriffith/kubernetes,frodenas/kubernetes,yujuhong/kubernetes,ixdy/kubernetes,khenidak/kubernetes,rrati/kubernetes,dlorenc/kubernetes,mikebrow/kubernetes,deads2k/kubernetes,mahak/kubernetes,wenlxie/kubernetes,cadmuxe/kubernetes,aveshagarwal/kubernetes,soltysh/kubernetes,ravilr/kubernetes,wenlxie/kubernetes,aveshagarwal/kubernetes,johscheuer/kubernetes,kevensen/kubernetes,GulajavaMinistudio/kubernetes,jennybuckley/kubernetes,johscheuer/kubernetes,jingxu97/kubernetes,ixdy/kubernetes,kpgriffith/kubernetes,khenidak/kubernetes,mikedanese/kubernetes,ravisantoshgudimetla/kubernetes,pwittrock/kubernetes,andrewrynhard/kubernetes,hex108/kubernetes,saad-ali/kubernetes,joelsmith/kubernetes,u2takey/kubernetes,thockin/kubernetes,pweil-/kubernetes,sanjeevm0/kubernetes,mboersma/kubernetes,fabriziopandini/kubernetes,mengqiy/kubernetes,erwinvaneyk/kubernetes,deads2k/kubernetes,ConnorDoyle/kubernetes,Lion-Wei/kubernetes,yujuhong/kubernetes,hex108/kubernetes,nckturner/kubernetes,mahak/kubernetes,kitt1987/kubernetes,warmchang/kubernetes,pweil-/kubernetes,nikhita/kubernetes,cmluciano/kubernetes,huangjiuyuan/kubernetes,warmchang/kubernetes,dereknex/kubernetes,ravilr/kubernetes,bizhao/kubernetes,sdminonne/kubernetes,cblecker/kubernetes,jennybuckley/kubernetes,brendandburns/kubernetes,PiotrProkop/kubernetes,linux-on-ibm-z/kubernetes,nak3/kubernetes,fgimenez/kubernetes,njuicsgz/kubernetes-1,saad-ali/kubernetes,fejta/kubernetes,xychu/kubernetes,openshift/kubernetes,Lion-Wei/kubernetes,kow3ns/kubernetes,cofyc/kubernetes,ravilr/kubernetes,shyamjvs/kubernetes,zhangmingld/kubernetes,linux-on-ibm-z/kubernetes,olivierlemasle/kubernetes,iterion/kubernetes,micahhausler/kubernetes,aledbf/kubernetes,spzala/kubernetes,andrewsykim/kubernetes,cmluciano/kubernetes,derekwaynecarr/kubernetes,tcnghia/kubernetes,enj/kubernetes,fabriziopandini/kubernetes,PI-Victor/kubernetes,rafax/kubernetes,GulajavaMinistudio/kubernetes,kitt1987/kubernetes,lojies/kubernetes,Lion-Wei/kubernetes,gnufied/kubernetes,mikebrow/kubernetes,yujuhong/kubernetes,tpepper/kubernetes,jdef/kubernetes,mkumatag/kubernetes,xychu/kubernetes,sdminonne/kubernetes,huangjiuyuan/kubernetes,tomzhang/kubernetes,derekwaynecarr/kubernetes,erwinvaneyk/kubernetes,xychu/kubernetes,hex108/kubernetes,andrewrynhard/kubernetes,verb/kubernetes,monopole/kubernetes,mYmNeo/kubernetes,lichuqiang/kubernetes,tpepper/kubernetes,krmayankk/kubernetes,pmorie/kubernetes,u2takey/kubernetes,krmayankk/kubernetes,PI-Victor/kubernetes,pires/kubernetes,jsafrane/kubernetes,humblec/kubernetes,luxas/kubernetes,huangjiuyuan/kubernetes,u2takey/kubernetes,DiamantiCom/kubernetes,Lion-Wei/kubernetes,chrislovecnm/kubernetes,liggitt/kubernetes,nikhita/kubernetes,micahhausler/kubernetes,ii/kubernetes,weiwei04/kubernetes,jagosan/kubernetes,njuicsgz/kubernetes-1,sdminonne/kubernetes,openshift/kubernetes,jsafrane/kubernetes,ping035627/kubernetes,csrwng/kubernetes,erwinvaneyk/kubernetes,carlory/kubernetes,nckturner/kubernetes,kow3ns/kubernetes,humblec/kubernetes,iameli/kubernetes,GulajavaMinistudio/kubernetes,feiskyer/kubernetes,cantbewong/kubernetes,roberthbailey/kubernetes,rrati/kubernetes,BenTheElder/kubernetes,carlory/kubernetes,gnufied/kubernetes,intelsdi-x/kubernetes,jdef/kubernetes,klaus1982/kubernetes,joelsmith/kubernetes,intelsdi-x/kubernetes,liggitt/kubernetes,yujuhong/kubernetes,zetaab/kubernetes,ingvagabund/kubernetes,kevensen/kubernetes,thockin/kubernetes,stevesloka/kubernetes,coolsvap/kubernetes,davidz627/kubernetes,jfrazelle/kubernetes,ravisantoshgudimetla/kubernetes,derekwaynecarr/kubernetes,sethpollack/kubernetes,fgimenez/kubernetes,rafax/kubernetes,cantbewong/kubernetes,cofyc/kubernetes,krmayankk/kubernetes,MHBauer/kubernetes,dims/kubernetes,mikebrow/kubernetes,mikedanese/kubernetes,nckturner/kubernetes,jennybuckley/kubernetes,mml/kubernetes,yarntime/kubernetes,ravisantoshgudimetla/kubernetes,GulajavaMinistudio/kubernetes,zhangmingld/kubernetes,pweil-/kubernetes,wongma7/kubernetes,shyamjvs/kubernetes,mikedanese/kubernetes,sethpollack/kubernetes,idvoretskyi/kubernetes,jennybuckley/kubernetes,nikhita/kubernetes,andrewsykim/kubernetes,pires/kubernetes,rrati/kubernetes,bparees/kubernetes,olivierlemasle/kubernetes,jackfrancis/kubernetes,xlgao-zju/kubernetes,mosoft521/kubernetes,warmchang/kubernetes,mahak/kubernetes,cmluciano/kubernetes,luxas/kubernetes,mYmNeo/kubernetes,luxas/kubernetes,pweil-/kubernetes,thockin/kubernetes,JacobTanenbaum/kubernet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ng/kubernetes,kitt1987/kubernetes,dims/kubernetes,chestack/kubernetes,nckturner/kubernetes,jfrazelle/kubernetes,kitt1987/kubernetes,chestack/kubernetes,tomerf/kubernetes,pires/kubernetes,lojies/kubernetes,fabriziopandini/kubernetes,mfojtik/kubernetes,LalatenduMohanty/kubernetes,kevin-wangzefeng/kubernetes,ixdy/kubernetes,kpgriffith/kubernetes,tengqm/kubernetes,brendandburns/kubernetes,lichuqiang/kubernetes,du2016/kubernetes,davidz627/kubernetes,zhouhaibing089/kubernetes,gnufied/kubernetes,jdef/kubernetes,li-ang/kubernetes,wongma7/kubernetes,xychu/kubernetes,tallclair/kubernetes,ixdy/kubernetes,weiwei04/kubernetes,klaus1982/kubernetes,ravisantoshgudimetla/kubernetes,davidz627/kubernetes,stevesloka/kubernetes,cantbewong/kubernetes,dims/kubernetes,Hui-Zhi/kubernetes,verult/kubernetes,csrwng/kubernetes,du2016/kubernetes,wanghaoran1988/kubernetes,dereknex/kubernetes,tpepper/kubernetes,zhangmingld/kubernetes,mYmNeo/kubernetes,verb/kubernetes,jessfraz/kubernetes,kitt1987/kubernetes,tallclair/kubernetes,iterion/kubernetes,mosoft521/kubernetes,gnufied/kubernetes,alejandroEsc/kubernetes,jdef/kubernetes,jingxu97/kubernetes,kevensen/kubernetes,lojies/kubernetes,mikedanese/kubernetes,dixudx/kubernetes,hex108/kubernetes,coolsvap/kubernetes,monopole/kubernetes,tomzhang/kubernetes,mengqiy/kubernetes,bizhao/kubernetes,wanghaoran1988/kubernetes,pmorie/kubernetes,weiwei04/kubernetes,mboersma/kubernetes,sethpollack/kubernetes,ii/kubernetes,dlorenc/kubernetes,aveshagarwal/kubernetes,aledbf/kubernetes,pwittrock/kubernetes,frodenas/kubernetes,enj/kubernetes,micahhausler/kubernetes,chestack/kubernetes,fgimenez/kubernetes,mfojtik/kubernetes,fanzhangio/kubernetes,tomzhang/kubernetes,kow3ns/kubernetes,LalatenduMohanty/kubernetes,khenidak/kubernetes,kubernetes/kubernetes,huangjiuyuan/kubernetes,lichuqiang/kubernetes,soltysh/kubernetes,jessfraz/kubernetes,davidz627/kubernetes,sdminonne/kubernetes,soltysh/kubernetes