Switch Maven link to point to downloads page
Switch Maven link to point to downloads page

It was pointing to one of our pages talking about use of Maven.

PiperOrigin-RevId: 332637518

google/closure-compiler,nawawi/closure-compiler,vobruba-martin/closure-compiler,google/closure-compiler,monetate/closure-compiler,Yannic/closure-compiler,vobruba-martin/closure-compiler,ChadKillingsworth/closure-compiler,monetate/closure-compiler,ChadKillingsworth/closure-compiler,ChadKillingsworth/closure-compiler,Yannic/closure-compiler,google/closure-compiler,ChadKillingsworth/closure-compiler,vobruba-martin/closure-compiler,monetate/closure-compiler,Yannic/closure-compiler,Yannic/closure-compiler,google/closure-compiler,monetate/closure-compiler,nawawi/closure-compiler,nawawi/closure-compiler,vobruba-martin/closure-compiler,nawawi/closure-compiler