Fix regex to detect ad type (#20899)
Fix regex to detect ad type (#20899)

* fix regex

* nit

voyagegroup/amphtml,cory-work/amphtml,jpettitt/amphtml,taboola/amphtml,sebastianbenz/amphtml,rsimha-amp/amphtml,zhangsu/amphtml,Gregable/amphtml,alanorozco/amphtml,taboola/amphtml,nexxtv/amphtml,yandex-pcode/amphtml,zhangsu/amphtml,voyagegroup/amphtml,alanorozco/amphtml,zhangsu/amphtml,alanorozco/amphtml,src-code/amphtml,prateekbh/amphtml,Gregable/amphtml,smartadserver/amphtml,jpettitt/amphtml,tlong2/amphtml,media-net/amphtml,zhouyx/amphtml,mhc-gh/amphtml,techhtml/amphtml,alanorozco/amphtml,lannka/amphtml,Gregable/amphtml,mhc-gh/amphtml,danielrozenberg/amphtml,erwinmombay/amphtml,nexxtv/amphtml,lannka/amphtml,dotandads/amphtml,ampproject/amphtml,widespace-os/amphtml,ampproject/amphtml,danielrozenberg/amphtml,ampproject/amphtml,mhc-gh/amphtml,danielrozenberg/amphtml,yandex-pcode/amphtml,src-code/amphtml,rsimha-amp/amphtml,cory-work/amphtml,src-code/amphtml,cvializ/amphtml,src-code/amphtml,yandex-pcode/amphtml,prateekbh/amphtml,cory-work/amphtml,sharethrough/amphtml,nexxtv/amphtml,smartadserver/amphtml,danielrozenberg/amphtml,honeybadgerdontcare/amphtml,Gregable/amphtml,dotandads/amphtml,sharethrough/amphtml,alanorozco/amphtml,widespace-os/amphtml,voyagegroup/amphtml,cvializ/amphtml,prateekbh/amphtml,honeybadgerdontcare/amphtml,prateekbh/amphtml,dotandads/amphtml,lannka/amphtml,jmadler/amphtml,ampproject/amphtml,widespace-os/amphtml,media-net/amphtml,techhtml/amphtml,ampproject/amphtml,dotandads/amphtml,jpettitt/amphtml,jridgewell/amphtml,honeybadgerdontcare/amphtml,erwinmombay/amphtml,taboola/amphtml,erwinmombay/amphtml,zhouyx/amphtml,danielrozenberg/amphtml,yandex-pcode/amphtml,zhouyx/amphtml,alanorozco/amphtml,jridgewell/amphtml,jmadler/amphtml,widespace-os/amphtml,media-net/amphtml,adup-tech/amphtml,lannka/amphtml,sebastianbenz/amphtml,sharethrough/amphtml,cory-work/amphtml,taboola/amphtml,cory-work/amphtml,tlong2/amphtml,jpettitt/amphtml,tlong2/amphtml,danielrozenberg/amphtml,smartadserver/amphtml,zhouyx/amphtml,Gregable/amphtml,adup-tech/amphtml,taboola/amphtml,rsimha-amp/amphtml,mhc-gh/amphtml,yandex-pcode/amphtml,lannka/amphtml,zhangsu/amphtml,erwinmombay/amphtml,honeybadgerdontcare/amphtml,jridgewell/amphtml,zhangsu/amphtml,danielrozenberg/amphtml,Gregable/amphtml,rsimha-amp/amphtml,ampproject/amphtml,rsimha-amp/amphtml,jpettitt/amphtml,adup-tech/amphtml,prateekbh/amphtml,jmadler/amphtml,techhtml/amphtml,mhc-gh/amphtml,sharethrough/amphtml,honeybadgerdontcare/amphtml,cvializ/amphtml,yandex-pcode/amphtml,jpettitt/amphtml,erwinmombay/amphtml,cory-work/amphtml,smartadserver/amphtml,dotandads/amphtml,jridgewell/amphtml,cory-work/amphtml,media-net/amphtml,nexxtv/amphtml,danielrozenberg/amphtml,prateekbh/amphtml,lannka/amphtml,yandex-pcode/amphtml,taboola/amphtml,media-net/amphtml,zhouyx/amphtml,sebastianbenz/amphtml,tlong2/amphtml,prateekbh/amphtml,rsimha-amp/amphtml,jpettitt/amphtml,tlong2/amphtml,media-net/amphtml,voyagegroup/amphtml,jmadler/amphtml,alanorozco/amphtml,alanorozco/amphtml,nexxtv/amphtml,widespace-os/amphtml,smartadserver/amphtml,voyagegroup/amphtml,honeybadgerdontcare/amphtml,mhc-gh/amphtml,techhtml/amphtml,cvializ/amphtml,nexxtv/amphtml,jmadler/amphtml,media-net/amphtml,techhtml/amphtml,sebastianbenz/amphtml,mhc-gh/amphtml,sebastianbenz/amphtml,ampproject/amphtml,media-net/amphtml,cvializ/amphtml,dotandads/amphtml,jridgewell/amphtml,Gregable/amphtml,jridgewell/amphtml,techhtml/amphtml,jmadler/amphtml,voyagegroup/amphtml,adup-tech/amphtml,smartadserver/amphtml,sebastianbenz/amphtml,zhouyx/amphtml,widespace-os/amphtml,tlong2/amphtml,taboola/amphtml,nexxtv/amphtml,mhc-gh/amphtml,src-code/amphtml,honeybadgerdontcare/amphtml,rsimha-amp/amphtml,zhouyx/amphtml,Gregable/amphtml,jpettitt/amphtml,adup-tech/amphtml,adup-tech/amphtml,src-code/amphtml,zhangsu/amphtml,erwinmombay/amphtml,sharethrough/amphtml,jridgewell/amphtml,voyagegroup/amphtml,cvializ/amphtml,sharethrough/amphtml,ampproject/amphtml,lannka/amphtml