Tweaked doc text in the readme file

Since the readme is also published to npm now, it is probably a
good idea to specify *which* repository I'm talking about.

Related to #134.

Author: stevenbenner

README.md

@@ -15,7 +15,7 @@ PowerTip is a jQuery tooltip plugin with some advanced features like **hover int
 
 ## Documentation
 
-You can find the documentation for the **latest release version** on the [PowerTip web site][projectpage]. You will find the documentation for the **latest in-development version** in the [doc folder][docs] in this repository.
+You can find the documentation for the **latest release version** on the [PowerTip web site][projectpage]. You will find the documentation for the **latest in-development version** in the [doc folder][docs] in the GitHub repository.
 
 [projectpage]: https://stevenbenner.github.io/jquery-powertip/
 [docs]: https://github.com/stevenbenner/jquery-powertip/tree/master/doc