Fix links to issue tracker and forum

Author: stevepiercy

README.md

@@ -32,8 +32,7 @@ The community is writing guides, installation instructions, and everything you n
 
 ## Support
 
-If you are having issues, please let us know by opening an issue in our [Issue Tracker](https://github.com/plone/training/issues) or asking a question on our
-[Community Space](https://community.plone.org).
+If you have issues, please open an issue in our [Issue Tracker](https://github.com/plone/documentation/issues) or ask a question on our [Community Forum, Documentation category](https://community.plone.org/c/documentation/13).
 
 
 ## Training