Add amp-form's submit action to the docs (#9675)
Add amp-form's submit action to the docs (#9675)


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vg/amphtml,sklobovskaya/amphtml,arealit/amphtml,kamtschatka/amphtml,alanorozco/amphtml,erwinmombay/amphtml,cory-work/amphtml,yandex-pcode/amphtml,sebastianbenz/amphtml,chaveznvg/amphtml,tlong2/amphtml,avimehta/amphtml,prateekbh/amphtml,zhouyx/amphtml,dotandads/amphtml,sharethrough/amphtml,honeybadgerdontcare/amphtml,bpaduch/amphtml,danielrozenberg/amphtml,src-code/amphtml,engtat/amphtml,engtat/amphtml,ADITION/amphtml,Gregable/amphtml,arealit/amphtml,prateekbh/amphtml,shawnbuso/amphtml,pedjoni8/amphtml,honeybadgerdontcare/amphtml,cory-work/amphtml,smartadserver/amphtml,alanorozco/amphtml,bpaduch/amphtml,yieldbot/amphtml,wjfang/amphtml,comScore/amphtml,vmarteev/amphtml,gumgum/amphtml,zhucl/amphtml,taboola/amphtml,comScore/amphtml,donttrustthisbot/amphtml,cvializ/amphtml,adiant/amphtml,arealit/amphtml,koshka/amphtml,zhangsu/amphtml,shawnbuso/amphtml,Gregable/amphtml,lannka/amphtml,adup-tech/amphtml,lannka/amphtml,cvializ/amphtml,zhucl/amphtml,adiant/amphtml,yieldmo/amphtml,BenDz/amphtml,erwinmombay/amphtml,cory-work/amphtml,Gregable/amphtml,aghassemi/amphtml,laterpay/amphtml,rsimha-amp/amphtml,adiant/amphtml,ampproject/amphtml,adup-tech/amphtml,cvializ/amphtml,kamtschatka/amphtml,aghassemi/amphtml,comScore/amphtml,kamtschatka/amphtml,donttrustthisbot/amphtml,lannka/amphtml,camelburrito/amphtml,BenDz/amphtml,gumgum/amphtml,kixer-com/amphtml,rajkumarsrk/amphtml,zhucl/amphtml,yieldbot/amphtml,prateekbh/amphtml,cory-work/amphtml,avimehta/amphtml,gumgum/amphtml,techhtml/amphtml,camelburrito/amphtml,src-code/amphtml,gumgum/amphtml,media-net/amphtml,dotandads/amphtml,engtat/amphtml,adiant/amphtml,sriramkrish85/amphtml,clawr/amphtml,koshka/amphtml,media-net/amphtml,clawr/amphtml,kixer-com/amphtml,taboola/amphtml,wjfang/amphtml,powdercloud/amphtml,chaveznvg/amphtml,jridgewell/amphtml,chaveznvg/amphtml,zhangsu/amphtml,tlong2/amphtml,aghassemi/amphtml,comScore/amphtml,ampproject/amphtml,jmadler/amphtml,wjfang/amphtml,jpettitt/amphtml,danielrozenberg/amphtml,rsimha-amp/amphtml,arealit/amphtml,adiant/amphtml,zhangsu/amphtml,voyagegroup/amphtml,donttrustthisbot/amphtml,jpettitt/amphtml,lannka/amphtml,laterpay/amphtml,sharethrough/amphtml,yandex-pcode/amphtml,ADITION/amphtml,yieldbot/amphtml,sriramkrish85/amphtml,chaveznvg/amphtml,widespace-os/amphtml,camelburrito/amphtml,mhc-gh/amphtml,jmadler/amphtml,ampproject/amphtml,yieldmo/amphtml,smartadserver/amphtml,widespace-os/amphtml,sklobovskaya/amphtml,sharethrough/amphtml,techhtml/amphtml,cory-work/amphtml,jridgewell/amphtml,nexxtv/amphtml,smartadserver/amphtml