Misleading text in the ajax `ifModified` documentation

[jamesplease]

Version: 2.1.1

It's possible that I'm misinterpreting this, but the documentation for ifModified explains:

To cause the request to report failure if the asset has not been modified since the last request, set ifModified to true.

Based on this, I expected a request to an unmodified resource to reject the Deferred object. However, it actually resolves. It seems unlikely that this behavior isn't intentional, so perhaps the wording there could be improved to explain that the Deferred will be resolved?