docs(api): example for $provide.value() uses $provide.value()
docs(api): example for $provide.value() uses $provide.value()

The example code for `$provide.value()` actually used `$provide.constant()`.
It now uses `$provide.value()`.

Closes #4983
Closes #4990

ammula88/angular.js,ammula88/angular.js,ammula88/angular.js,ammula88/angular.js,ammula88/angular.js