docs(ngMock) add @packageName tag to fix invalid module overview pages

Closes angular#7284
Closes angular#8038

Author: petebacondarwin

src/ngMock/angular-mocks.js

@@ -1732,6 +1732,7 @@ angular.mock.$RootElementProvider = function() {
 /**
  * @ngdoc module
  * @name ngMock
+ * @packageName angular-mocks
  * @description
  *
  * # ngMock
@@ -1761,6 +1762,7 @@ angular.module('ngMock', ['ng']).provider({
  * @ngdoc module
  * @name ngMockE2E
  * @module ngMockE2E
+ * @packageName angular-mocks
  * @description
  *
  * The `ngMockE2E` is an angular module which contains mocks suitable for end-to-end testing.