chore(package.json): update dgeni-packages dependency

The new version of dgeni-packages/ngdoc generates a manifest for each
example that can be used by plunker.
chore(doc-gen): fix dependencyPath
fix (ngAnimate): fix requestAnimationFrame for old version of Firefox

The recent $$RAFProvider which is a wrapper for the native
requestAnimationFrame method doesn't use the mozRequestAnimationFrame.
Old versions of FF (20 for example) crash if ngAnimate is included

No breaking changes and fix issue https://github.com/angular/angular.js/issues/6535

Closes #6535
Closes #6540
docs($resource): fix example using promise
docs(guide/unit-testing): fix typo
docs(guide/compiler): add missing closing parenthesis
docs(ngMock): grammar nitpick.