Update CONTRIBUTING.md

CONTRIBUTING.md

@@ -4,13 +4,13 @@ Thanks for your interest in this project.
 
 ## Project description
 
-* https://github.com/EclipseFdn/osgi.org
+* https://gitlab.eclipse.org/eclipsefdn/it/websites/osgi.org
 
 ## Developer resources
 
 The project maintains the following source code repositories
 
-* https://github.com/EclipseFdn/osgi.org
+* https://gitlab.eclipse.org/eclipsefdn/it/websites/osgi.org
 
 ## Eclipse Contributor Agreement