CONTRIBUTIGN.md

* ppf.datamatrix should be ppf.webref (copy & paste error)
* fixed link to dev docs

docs/CONTRIBUTING.md

@@ -6,7 +6,7 @@ Thank for considering a contribution! Any help is greatly appreciated.
 ## Did you find an issue?
 
 * Check whether your issue has already been reported by searching under
-  [existing issues](https://github.com/adrianschlatter/ppf.datamatrix/issues).
+  [existing issues](https://github.com/adrianschlatter/ppf.webref/issues).
 
 * If don't find an issue addressing the problem, open a new issue.
 
@@ -26,7 +26,7 @@ You already have a solution for an issue or a new feature? All the better! A
 pull request ("PR") is what you want to do.
 
 * Open a new
-  [pull-request](https://github.com/adrianschlatter/ppf.datamatrix/pulls)
+  [pull-request](https://github.com/adrianschlatter/ppf.webref/pulls)
   with your patch.
 
 * Try to create PRs that address a specific issue/feature/topic.
@@ -46,6 +46,6 @@ pull request ("PR") is what you want to do.
 
 ## Final remarks
 
-Currently, ppf.datamatrix is maintained in the spare time of a single person
+Currently, ppf.webref is maintained in the spare time of a single person
 having a family and a job. If you do not get immediate feedback to your issue
 or pull request, please have some patience.