Update contributing link (#470)

* cloud-native-toolkit/planning#845: Update contributing link

Signed-off-by: Bobby Woolf <bwoolf@us.ibm.com>

* Fix for PR-Verify

Signed-off-by: Bobby Woolf <bwoolf@us.ibm.com>

Author: bwoolf1

README.md

@@ -25,7 +25,7 @@ the approved logos and the requirements for their use.
 
 ## Contributing to Docs
 
-To update and manage the Developer Guide follow these steps here https://cloudnativetoolkit.dev/contribute/documentation.html#setting-up-a-documentation-environment
+To update and manage the Developer Guide, follow these steps in [Updating the Developer Guide](https://cloudnativetoolkit.dev/contribute/documentation/).
 
 ### Publish Content