Update README.adoc

README.adoc

@@ -17,7 +17,7 @@ You can write portable UI code that can run
 * as dummy implementation for automated unit tests using https://github.com/m-m-m/ui-test[mmm-ui-test]
 * ...in the future we might implement more alternatives such as iOS or SWT
 
-For motivation and details see the https://github.com/m-m-m/ui-api/wiki[wiki] or JavaDoc (click on the badge).
+See our link:/doc/motivation.adoc[motivation] or JavaDoc (click on the badge) for further details.
 In order to implement your client (with UI) you only need to depend on modules from this API.
 Therefore, you will typically build a module for your client that is portable.
 Dependencies to the implementation of this UI are only needed at runtime.