Update amp-embed.md
Update amp-embed.md

Add intro and validation tables to this tag to support validation error links.
media-net/amphtml,widespace-os/amphtml,ColombiaAnalytics/amphtml,zhucl/amphtml,nexxtv/amphtml,jridgewell/amphtml,voyagegroup/amphtml,yandex-pcode/amphtml,mkhatib/amphtml,media-net/amphtml,yandex-pcode/amphtml,cory-work/amphtml,jpettitt/amphtml,sortable/amphtml,ampproject/amphtml,shawnbuso/amphtml,lzanol/amphtml,src-code/amphtml,BrightcoveOS/amphtml,Mobusi-ads/amphtml,arealit/amphtml,sharethrough/amphtml,vmarteev/amphtml,gumgum/amphtml,BenDz/amphtml,engtat/amphtml,Gregable/amphtml,clawr/amphtml,zhouyx/amphtml,aghassemi/amphtml,laterpay/amphtml,ecoron/amphtml,lannka/amphtml,alanorozco/amphtml,nekodo/amphtml,media-net/amphtml,bpaduch/amphtml,prateekbh/amphtml,mhc-gh/amphtml,sharethrough/amphtml,yevheniiminin/amphtml,chaveznvg/amphtml,Lith/amphtml,powdercloud/amphtml,Lith/amphtml,ecoron/amphtml,jlucero-contentad/amphtml,dvoytenko/amphtml,rajkumarsrk/amphtml,nathangoulding/amphtml,jlucero-contentad/amphtml,clawr/amphtml,honeybadgerdontcare/amphtml,mhc-gh/amphtml,ampproject/amphtml,BenDz/amphtml,mhc-gh/amphtml,voyagegroup/amphtml,Gregable/amphtml,BenDz/amphtml,luciancrasovan/amphtml,DAC-f1h-dev/amphtml,devjsun/amphtml,widespace-os/amphtml,amoad-amoe/amphtml,clawr/amphtml,wjfang/amphtml,engtat/amphtml,sklobovskaya/amphtml,BrightcoveOS/amphtml,nexxtv/amphtml,spotxchange/amphtml,keithwrightbos/amphtml,Adtoma/amphtml,adiant/amphtml,criteo-forks/amphtml,ecoron/amphtml,dotandads/amphtml,mlb7687/amphtml,ruturajv-media-net/amphtml,lannka/amphtml,camelburrito/amphtml,kixer-com/amphtml,keithwrightbos/amphtml,voyagegroup/amphtml,Adtoma/amphtml,avimehta/amphtml,comScore/amphtml,comScore/amphtml,shawnbuso/amphtml,taboola/amphtml,amoad-amoe/amphtml,mkhatib/amphtml,shawnbuso/amphtml,dotandads/amphtml,laterpay/amphtml,DarXector/amphtml,AaronCritchley/amphtml,triplelift/amphtml,nexxtv/amphtml,honeybadgerdontcare/amphtml,dotandads/amphtml,zhucl/amphtml,nathangoulding/amphtml,media-net/amphtml,rlugojr/amphtml,wjfang/amphtml,zhouyx/amphtml,lzanol/amphtml,ericlindley-g/amphtml,lannka/amphtml,yandex-pcode/amphtml,clawr/amphtml,cvializ/amphtml,src-code/amphtml,JuliusThms/amphtml,kixer-com/amphtml,yieldbot/amphtml,JuliusThms/amphtml,criteo-forks/amphtml,ADITION/amphtml,techhtml/amphtml,smartadserver/amphtml,loic-seguin/amphtml,prateekbh/amphtml,ithinkihaveacat/amphtml,spotxchange/amphtml,arealit/amphtml,engtat/amphtml,taboola/amphtml,lzanol/amphtml,yieldbot/amphtml,jdelhommeau/amphtml,Gregable/amphtml,ampproject/amphtml,wjfang/amphtml,jridgewell/amphtml,wjfang/amphtml,danielrozenberg/amphtml,jmadler/amphtml,nathangoulding/amphtml,danielrozenberg/amphtml,jdelhommeau/amphtml,mhc-gh/amphtml,jasti/amphtml,Gregable/amphtml,adiant/amphtml,sharethrough/amphtml,burtcorp/amphtml,tdrl/amphtml,donttrustthisbot/amphtml,plista/amphtml,Mobusi-ads/amphtml,devjsun/amphtml,ericlindley-g/amphtml,jpettitt/amphtml,DarXector/amphtml,AaronCritchley/amphtml,luciancrasovan/amphtml,kmh287/amphtml,danielrozenberg/amphtml,yandex-pcode/amphtml,zhangsu/amphtml,yieldmo/amphtml,voyagegroup/amphtml,britice/amphtml,yieldmo/amphtml,prateekbh/amphtml,Re-lM/amphtml,ColombiaAnalytics/amphtml,pietergreyling/amphtml,burtcorp/amphtml,yieldbot/amphtml,sriramkrish85/amphtml,zhucl/amphtml,src-code/amphtml,rifler/amphtml,comScore/amphtml,aghassemi/amphtml,adup-tech/amphtml,jdelhommeau/amphtml,jpettitt/amphtml,Gregable/amphtml,jasti/amphtml,pedjoni8/amphtml,burtcorp/amphtml,triplelift/amphtml,rajkumarsrk/amphtml,sriramkrish85/amphtml,donttrustthisbot/amphtml,rsimha-amp/amphtml,honeybadgerdontcare/amphtml,sriramkrish85/amphtml,prateekbh/amphtml,burtcorp/amphtml,sebastianbenz/amphtml,kmh287/amphtml,media-net/amphtml,adtechnology/amphtml,rifler/amphtml,jridgewell/amphtml,dvoytenko/amphtml,adiant/amphtml,camelburrito/amphtml,bpaduch/amphtml,jpettitt/amphtml,pietergreyling/amphtml,lannka/amphtml,gumgum/amphtml,pedjoni8/amphtml,adiant/amphtml,nekodo/amphtml,sriramkrish85/amphtml,vmarteev/amphtml,yevheniiminin/amphtml,sortable/amphtml,alanorozco/amphtml,donttrustthisbot/amphtml,fullspeed-sp/amphtml,plista/amphtml,koshka/amphtml,widespace-os/amphtml,yieldmo/amphtml,rajkumarsrk/amphtml,nekodo/amphtml,yevheniiminin/amphtml,nexxtv/amphtml,devjsun/amphtml,koshka/amphtml,adup-tech/amphtml,triplelift/amphtml,DarXector/amphtml,yieldmo/amphtml,koshka/amphtml,cory-work/amphtml,criteo-forks/amphtml,triplelift/amphtml,kixer-com/amphtml,AaronCritchley/amphtml,arealit/amphtml,media-net/amphtml,kixer-com/amphtml,nekodo/amphtml,adup-tech/amphtml,aghassemi/amphtml,fullspeed-sp/amphtml,jdelhommeau/amphtml,sebastianbenz/amphtml,cvializ/amphtml,ColombiaAnalytics/amphtml,DistroScale/amphtml,erwinmombay/amphtml,lannka/amphtml,erwinmombay/amphtml,sortable/amphtml,bpaduch/amphtml,bpaduch/amphtml,Mobusi-ads/amphtml,prateekbh/amphtml,burtcorp/amphtml,koshka/amphtml,sriramkrish85/amphtml,camelburrito/amphtml,tdrl/amphtml,clawr/amphtml,techhtml/amphtml,clawr/amphtml,cory-work/amphtml,Adtoma/amphtml,adiant/amphtml,danielrozenberg/amphtml,jmadler/amphtml,mlb7687/amphtml,sharethrough/amphtml,galeksic/amphtml,kmh287/amphtml,sebastianbenz/amphtml,sharethrough/amphtml,kamtschatka/amphtml,DarXector/amphtml,keithwrightbos/amphtml,zhangsu/amphtml,interspacejp/amphtml,widespace-os/amphtml,honeybadgerdontcare/amphtml,loic-seguin/amphtml,aghassemi/amphtml,jdelhommeau/amphtml,ampproject/amphtml,chaveznvg/amphtml,yieldmo/amphtml,jmadler/amphtml,lzanol/amphtml,taboola/amphtml,pietergreyling/amphtml,tlong2/amphtml,cory-work/amphtml,mlb7687/amphtml,Gregable/amphtml,arealit/amphtml,wjfang/amphtml,danielrozenberg/amphtml,adiant/amphtml,kmh287/amphtml,ruturajv-media-net/amphtml,AaronCritchley/amphtml,jridgewell/amphtml,rajkumarsrk/amphtml,zhangsu/amphtml,gumgum/amphtml,dvoytenko/amphtml,tlong2/amphtml,sortable/amphtml,smartadserver/amphtml,media-net/amphtml,camelburrito/amphtml,prateekbh/amphtml,zhucl/amphtml,amoad-amoe/amphtml,Mobusi-ads/amphtml,laterpay/amphtml,burtcorp/amphtml,Mixpo/amphtml,DAC-f1h-dev/amphtml,Mixpo/amphtml,alanorozco/amphtml,ampproject/amphtml,adiant/amphtml,ericlindley-g/amphtml,DistroScale/amphtml,jridgewell/amphtml,rsimha-amp/amphtml,voyagegroup/amphtml,chaveznvg/amphtml,yevheniiminin/amphtml,AaronCritchley/amphtml,alanorozco/amphtml,jpettitt/amphtml,interspacejp/amphtml,tlong2/amphtml,galeksic/amphtml,comScore/amphtml,ericlindley-g/amphtml,chaveznvg/amphtml,AaronCritchley/amphtml,pedjoni8/amphtml,Adtoma/amphtml,jasti/amphtml,yandex-pcode/amphtml,avimehta/amphtml,criteo-forks/amphtml,NataliaLKB/amphtml,luciancrasovan/amphtml,jasti/amphtml,mkhatib/amphtml,sklobovskaya/amphtml,sklobovskaya/amphtml,nexxtv/amphtml,tdrl/amphtml,mhc-gh/amphtml,lzanol/amphtml,plista/amphtml,src-code/amphtml,jmadler/amphtml,taboola/amphtml,ecoron/amphtml,vmarteev/amphtml,luciancrasovan/amphtml,rlugojr/amphtml,zhangsu/amphtml,yevheniiminin/amphtml,DistroScale/amphtml,ADITION/amphtml,kamtschatka/amphtml,dotandads/amphtml,BenDz/amphtml-atinternet,lannka/amphtml,camelburrito/amphtml,DAC-f1h-dev/amphtml,DistroScale/amphtml,smartadserver/amphtml,rifler/amphtml,taboola/amphtml,interspacejp/amphtml,donttrustthisbot/amphtml,powdercloud/amphtml,sebastianbenz/amphtml,engtat/amphtml,kamtschatka/amphtml,ADITION/amphtml,galeksic/amphtml,sklobovskaya/amphtml,mkhatib/amphtml,mlb7687/amphtml,donttrustthisbot/amphtml,zhouyx/amphtml,alanorozco/amphtml,Gregable/amphtml,engtat/amphtml,BrightcoveOS/amphtml,yevheniiminin/amphtml,smartadserver/amphtml,lzanol/amphtml,jmadler/amphtml,arealit/amphtml,fullspeed-sp/amphtml,fullspeed-sp/amphtml,plista/amphtml,engtat/amphtml,tlong2/amphtml,NataliaLKB/amphtml,Mobusi-ads/amphtml,src-code/amphtml,erwinmombay/amphtml,Lith/amphtml,devjsun/amphtml,rlugojr/amphtml,powdercloud/amphtml,mkhatib/amphtml,adtechnology/amphtml,nathangoulding/amphtml,sriramkrish85/amphtml,engtat/amphtml,BrightcoveOS/amphtml,Mixpo/amphtml,Mobusi-ads/amphtml,BenDz/amphtml,zhouyx/amphtml,donttrustthisbot/amphtml,widespace-os/amphtml,DistroScale/amphtml,BrightcoveOS/amphtml,ampproject/amphtml,ericlindley-g/amphtml,vmarteev/amphtml,Adtoma/amphtml,keithwrightbos/amphtml,jasti/amphtml,galeksic/amphtml,zhouyx/amphtml,kixer-com/amphtml,taboola/amphtml,BenDz/amphtml,zhangsu/amphtml,rajkumarsrk/amphtml,bpaduch/amphtml,spotxchange/amphtml,alanorozco/amphtml,jlucero-contentad/amphtml,cory-work/amphtml,keithwrightbos/amphtml,tlong2/amphtml,adup-tech/amphtml,tdrl/amphtml,BrightcoveOS/amphtml,alanorozco/amphtml,NataliaLKB/amphtml,pietergreyling/amphtml,techhtml/amphtml,JuliusThms/amphtml,criteo-forks/amphtml,Re-lM/amphtml,yieldbot/amphtml,devjsun/amphtml,ampproject/amphtml,ecoron/amphtml,criteo-forks/amphtml,mhc-gh/amphtml,voyagegroup/amphtml,yandex-pcode/amphtml,jpettitt/amphtml,spotxchange/amphtml,tlong2/amphtml,chaveznvg/amphtml,Mixpo/amphtml,interspacejp/amphtml,yieldbot/amphtml,NataliaLKB/amphtml,clawr/amphtml,jlucero-contentad/amphtml,Gregable/amphtml,galeksic/amphtml,koshka/amphtml,adtechnology/amphtml,rsimha-amp/amphtml,gumgum/amphtml,smartadserver/amphtml,vmarteev/amphtml,pedjoni8/amphtml,jridgewell/amphtml,alanorozco/amphtml,cvializ/amphtml,erwinmombay/amphtml,vmarteev/amphtml,ADITION/amphtml,spotxchange/amphtml,adtechnology/amphtml,shawnbuso/amphtml,nexxtv/amphtml,DistroScale/amphtml,gumgum/amphtml,Mixpo/amphtml,BenDz/amphtml,gumgum/amphtml,kixer-com/amphtml,avimehta/amphtml,adup-tech/amphtml,camelburrito/amphtml,jmadler/amphtml,lannka/amphtml,adtechnology/amphtml,ruturajv-media-net/amphtml,rsimha-amp/amphtml,honeybadgerdontcare/amphtml,cory-work/amphtml,luciancrasovan/amphtml,jlucero-contentad/amphtml,cvializ/amphtml,rsimha-amp/amphtml,gumgum/amphtml,zhangsu/amphtml,mlb7687/amphtml,powdercloud/amphtml,cvializ/amphtml,chaveznvg/amphtml,kamtschatka/amphtml,ruturajv-media-net/amphtml,zhucl/amphtml,techhtml/amphtml,comScore/amphtml,loic-seguin/amphtml,rsimha-amp/amphtml,rajkumarsrk/amphtml,zhucl/amphtml,jdelhommeau/amphtml,sklobovskaya/amphtml,sebastianbenz/amphtml,shawnbuso/amphtml,tdrl/amphtml,pedjoni8/amphtml,loic-seguin/amphtml,avimehta/amphtml,rifler/amphtml,aghassemi/amphtml,DarXector/amphtml,ruturajv-media-net/amphtml,sharethrough/amphtml,cvializ/amphtml,koshka/amphtml,Lith/amphtml,yieldmo/amphtml,britice/amphtml,Adtoma/amphtml,yieldbot/amphtml,ColombiaAnalytics/amphtml,Re-lM/amphtml,keithwrightbos/amphtml,dvoytenko/amphtml,kixer-com/amphtml,rajkumarsrk/amphtml,vmarteev/amphtml,danielrozenberg/amphtml,Lith/amphtml,keithwrightbos/amphtml,arealit/amphtml,voyagegroup/amphtml,ericlindley-g/amphtml,shawnbuso/amphtml,smartadserver/amphtml,dvoytenko/amphtml,zhucl/amphtml,media-net/amphtml,donttrustthisbot/amphtml,taboola/amphtml,zhouyx/amphtml,comScore/amphtml,pietergreyling/amphtml,sortable/amphtml,erwinmombay/amphtml,ampproject/amphtml,mhc-gh/amphtml,danielrozenberg/amphtml,DAC-f1h-dev/amphtml,DAC-f1h-dev/amphtml,dotandads/amphtml,luciancrasovan/amphtml,laterpay/amphtml,shawnbuso/amphtml,rsimha-amp/amphtml,sklobovskaya/amphtml,britice/amphtml,sklobovskaya/amphtml,ecoron/amphtml,JuliusThms/amphtml,luciancrasovan/amphtml,avimehta/amphtml,yandex-pcode/amphtml,src-code/amphtml,mhc-gh/amphtml,sebastianbenz/amphtml,laterpay/amphtml,devjsun/amphtml,honeybadgerdontcare/amphtml,DarXector/amphtml,rifler/amphtml,powdercloud/amphtml,ruturajv-media-net/amphtml,ithinkihaveacat/amphtml,rifler/amphtml,erwinmombay/amphtml,triplelift/amphtml,pietergreyling/amphtml,arealit/amphtml,yieldmo/amphtml,nexxtv/amphtml,interspacejp/amphtml,avimehta/amphtml,spotxchange/amphtml,dvoytenko/amphtml,amoad-amoe/amphtml,kmh287/amphtml,jpettitt/amphtml,adtechnology/amphtml,cory-work/amphtml,Re-lM/amphtml,jpettitt/amphtml,wjfang/amphtml,BenDz/amphtml-atinternet,zhouyx/amphtml,BenDz/amphtml-atinternet,dotandads/amphtml,ADITION/amphtml,Mixpo/amphtml,wjfang/amphtml,JuliusThms/amphtml,camelburrito/amphtml,bpaduch/amphtml,pedjoni8/amphtml,rlugojr/amphtml,amoad-amoe/amphtml,danielrozenberg/amphtml,widespace-os/amphtml,ithinkihaveacat/amphtml,powdercloud/amphtml,jridgewell/amphtml,adup-tech/amphtml,tdrl/amphtml,mlb7687/amphtml,techhtml/amphtml,jasti/amphtml,amoad-amoe/amphtml,ithinkihaveacat/amphtml,mkhatib/amphtml,Lith/amphtml,laterpay/amphtml,comScore/amphtml,rlugojr/amphtml,fullspeed-sp/amphtml,JuliusThms/amphtml,powdercloud/amphtml,kmh287/amphtml,kamtschatka/amphtml,interspacejp/amphtml,bpaduch/amphtml,prateekbh/amphtml,kamtschatka/amphtml,honeybadgerdontcare/amphtml,britice/amphtml,jlucero-contentad/amphtml,DAC-f1h-dev/amphtml,techhtml/amphtml,fullspeed-sp/amphtml,sortable/amphtml,aghassemi/amphtml,rlugojr/amphtml,triplelift/amphtml