docs(angular.forEach): key value reversed in the example code

[TruthReveller]

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

Update error in docs

What is the current behavior? (You can also link to an open issue here)

What is the new behavior (if this is a feature change)?

Does this PR introduce a breaking change?

Please check if the PR fulfills these requirements

• The commit message follows our guidelines: https://github.com/angular/angular.js/blob/master/CONTRIBUTING.md#commit-message-format
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

Other information:

 var values = {name: 'misko', gender: 'male'};
 var log = [];
 angular.forEach(values, function(value, key) {
   this.push(key + ': ' + value);
 }, log);
 expect(log).toEqual(['name: misko', 'gender: male']);

should be

angular.forEach(values, function(key, value) {

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[TruthReveller]

I signed it!

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[TruthReveller]

what happens when Travis CI build fails?

[Narretz]

If Travis fails when only documentation is changed, then it's usually not a problem with the PR itself.
However, your change is not correct: the callback fn is called with value, key, same as with regular forEach: https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach