Update php.json for updated PHP 7  link.
Update php.json for updated PHP 7  link.

I was getting a 404 for the 7.0.0 and found out the download repo is 7.0.1.

Link of downloads: http://windows.php.net/downloads/releases/
damnhandy/scoop,reelsense/scoop,berwyn/scoop,r15ch13/scoop,saildata/scoop,systemexitzero/scoop,bpollack/scoop,lukesampson/scoop,kodybrown/scoop,nikolasd/scoop,vinaynambiar/lukesampson-,coonce/scoop,Congee/scoop,moigagoo/scoop,yunspace/scoop,rmyorston/scoop,nueko/scoop,Cyianor/scoop,rodericktech/scoop,vidarkongsli/scoop,toxeus/scoop,rasa/scoop