Add to path field help: For internal non-aliased paths only

I had the same problem as: http://drupal.org/node/1669256#comment-6191554

I originally tried aliased paths. The path field help text be updated to be more clear. This is the current text:

The URL path where breadcrumb will be shown. You may create named placeholders for variable parts of the path by using %name for required elements. For example: "node/%node/foo" or "forum/%forum". These named placeholders can be turned into contexts on the arguments form.

Maybe just change to "The URL non-aliased path..."