Remove XSS vulnerability with proper escaping (#3959)
Remove XSS vulnerability with proper escaping (#3959)

A reader might copy this example without realizing a big difference between `#{}` and `<%= %>`.
michalmuskala/phoenix,nshafer/phoenix,0x00evil/phoenix,eksperimental/phoenix,phoenixframework/phoenix,nshafer/phoenix,phoenixframework/phoenix,0x00evil/phoenix,optikfluffel/phoenix,rafbgarcia/phoenix,0x00evil/phoenix,eksperimental/phoenix,rafbgarcia/phoenix,optikfluffel/phoenix,phoenixframework/phoenix,rafbgarcia/phoenix,michalmuskala/phoenix,optikfluffel/phoenix,nshafer/phoenix