Update concat code snippet (#29145)
Update concat code snippet (#29145)

We should actually concat something to the array.
alanorozco/amphtml,media-net/amphtml,voyagegroup/amphtml,nexxtv/amphtml,alanorozco/amphtml,ampproject/amphtml,smartadserver/amphtml,adup-tech/amphtml,jridgewell/amphtml,jridgewell/amphtml,zhouyx/amphtml,lannka/amphtml,jmadler/amphtml,alanorozco/amphtml,mhc-gh/amphtml,zhouyx/amphtml,rsimha-amp/amphtml,danielrozenberg/amphtml,danielrozenberg/amphtml,Gregable/amphtml,jridgewell/amphtml,honeybadgerdontcare/amphtml,danielrozenberg/amphtml,nexxtv/amphtml,jpettitt/amphtml,prateekbh/amphtml,lannka/amphtml,smartadserver/amphtml,rsimha-amp/amphtml,voyagegroup/amphtml,voyagegroup/amphtml,smartadserver/amphtml,jpettitt/amphtml,danielrozenberg/amphtml,Gregable/amphtml,rsimha-amp/amphtml,adup-tech/amphtml,ampproject/amphtml,ampproject/amphtml,jpettitt/amphtml,nexxtv/amphtml,honeybadgerdontcare/amphtml,ampproject/amphtml,danielrozenberg/amphtml,mhc-gh/amphtml,media-net/amphtml,jpettitt/amphtml,Gregable/amphtml,nexxtv/amphtml,nexxtv/amphtml,ampproject/amphtml,jridgewell/amphtml,jmadler/amphtml,prateekbh/amphtml,ampproject/amphtml,media-net/amphtml,jmadler/amphtml,media-net/amphtml,ampproject/amphtml,rsimha-amp/amphtml,jridgewell/amphtml,jpettitt/amphtml,media-net/amphtml,honeybadgerdontcare/amphtml,zhouyx/amphtml,lannka/amphtml,mhc-gh/amphtml,lannka/amphtml,jpettitt/amphtml,smartadserver/amphtml,prateekbh/amphtml,mhc-gh/amphtml,prateekbh/amphtml,smartadserver/amphtml,sharethrough/amphtml,media-net/amphtml,alanorozco/amphtml,zhouyx/amphtml,mhc-gh/amphtml,nexxtv/amphtml,adup-tech/amphtml,adup-tech/amphtml,honeybadgerdontcare/amphtml,danielrozenberg/amphtml,honeybadgerdontcare/amphtml,honeybadgerdontcare/amphtml,voyagegroup/amphtml,rsimha-amp/amphtml,Gregable/amphtml,mhc-gh/amphtml,jmadler/amphtml,prateekbh/amphtml,zhouyx/amphtml,sharethrough/amphtml,prateekbh/amphtml,voyagegroup/amphtml,Gregable/amphtml,alanorozco/amphtml,jmadler/amphtml,Gregable/amphtml,mhc-gh/amphtml,jmadler/amphtml,jridgewell/amphtml,danielrozenberg/amphtml,lannka/amphtml,sharethrough/amphtml,voyagegroup/amphtml,alanorozco/amphtml,zhouyx/amphtml,rsimha-amp/amphtml,alanorozco/amphtml,ampproject/amphtml,honeybadgerdontcare/amphtml,alanorozco/amphtml,sharethrough/amphtml,jpettitt/amphtml,mhc-gh/amphtml,Gregable/amphtml,media-net/amphtml,lannka/amphtml,smartadserver/amphtml,danielrozenberg/amphtml,lannka/amphtml,nexxtv/amphtml,adup-tech/amphtml,rsimha-amp/amphtml,voyagegroup/amphtml,sharethrough/amphtml,Gregable/amphtml,zhouyx/amphtml,jridgewell/amphtml,prateekbh/amphtml,media-net/amphtml,sharethrough/amphtml,adup-tech/amphtml,jpettitt/amphtml