linking our pages contributing guidelines (Open-MSS#2578)

Author: ReimarBauer

CONTRIBUTING.md

@@ -1,17 +1,8 @@
 # Contributing
 
-When contributing to this repository, please first discuss the change you wish to make via issue,
-email, or any other method with the owners of this repository before making a change.
+We'd love for your contribution to the Mission Support System (MSS) to help make it better!
+We want contributing to MSS to be fun and educational for everyone.
+All kind of contributions are welcome, including issue descriptions and new documents,
+as well as updates and improvements and more.
 
-Please note we have a code of conduct, please follow it in all your interactions with the project.
-
-## Pull Request Process
-
-1. Ensure any install or build dependencies are removed before the end of the layer when doing a
-   build.
-2. Update the README.md with details of changes to the interface, this includes new environment
-   variables, exposed ports, useful file locations and container parameters.
-3. Increase the version numbers in any examples files and the README.md to the new version that this
-   Pull Request would represent. The versioning scheme we use is [SemVer](http://semver.org/).
-4. You may merge the Pull Request in once you have the sign-off of two other developers, or if you
-   do not have permission to do that, you may request the second reviewer to merge it for you.
+Our **[contributing](https://open-mss.github.io/contributing/)** guidelines provide instructions on how to get involved.