Update CONTRIBUTING.md

CONTRIBUTING.md

@@ -2,30 +2,29 @@
 
 ## Developer resources
 
-The source code for Eclipse SET is hosted on the Eclipse Foundation's GitLab instance:
+The source code for Eclipse SET is hosted on the Github instance:
 
-* https://gitlab.eclipse.org/eclipse/set
+* https://github.com/eclipse-set/
 
 The project is split into four major components:
 
-* https://gitlab.eclipse.org/eclipse/set/set Contains the primary source code of the Eclipse Signalling Engineering Toolbox.
-* https://gitlab.eclipse.org/eclipse/set/browser Contains the CEF-based browser integration for SWT used to display web components.
-* https://gitlab.eclipse.org/eclipse/set/model Contains the baseline PlanPro EMF data model used by the Toolbox for loading PlanPro files. 
-* https://gitlab.eclipse.org/eclipse/set/toolbox-model Contains a specialized adapted PlanPro EMF data model internallly used by the Toolbox.
+* https://github.com/eclipse-set/set Contains the primary source code of the Eclipse Signalling Engineering Toolbox.
+* https://github.com/eclipse-set/browser Contains the CEF-based browser integration for SWT used to display web components.
+* https://github.com/eclipse-set/model Contains the baseline PlanPro EMF data model used by the Toolbox for loading PlanPro files. 
 
 For detailed build instructions see [BUILD_INSTRUCTIONS.md](BUILD_INSTRUCTIONS.md).
 
 ## Reporting issues and feature requests
 
 Please file all issues and feature requests under the main SET repository, even if it is with a specific component:
 
-* https://gitlab.eclipse.org/eclipse/set/set/-/issues
+* https://github.com/eclipse-set/set/issues
 
 ## Contributing code changes
 
 If you intend to contribute code changes, please use a GitLab Merge Request 
 
-* https://gitlab.eclipse.org/groups/eclipse/set/-/merge_requests
+* https://github.com/eclipse-set/set/pulls
 
 Before contributing significant changes, please file an issue first. This allows us to discuss the merit of the contribution before you spend time on a feature that ends up being out of scope for the project. 
 
@@ -63,4 +62,4 @@ https://www.eclipse.org/projects/handbook/#resources-commit
 
 Contact the project developers via the project's "dev" list or by filing an issue in the GitLab mentioned above.
 
-* https://accounts.eclipse.org/mailing-list/set-dev
+* https://accounts.eclipse.org/mailing-list/set-dev