collection: Update Contributors list

CONTRIBUTORS.md

@@ -0,0 +1,30 @@
+# Contributors to Ansible Playbooks for SAP
+
+Thank you to all contributors who have helped make this project possible!
+
+We welcome contributions! Please see our [contributing guidelines](https://sap-linuxlab.github.io/initiative_contributions/) to get started.
+
+## Maintainers
+
+The following people are the maintainers of this collection:
+
+### Red Hat
+
+- [Janine Fuchs](https://github.com/ja9fuchs)
+
+### SUSE
+
+- [Marcel Mamula](https://github.com/marcelmamula)
+
+
+For specific role maintainers, see the `README.md` file in the corresponding role's directory.
+
+## All Contributors
+
+| Name | Commits | Lines Changed | Last Commit |
+| ---- | ------- | ------------- | ----------- |
+| [Sean Freeman](https://github.com/sean-freeman) | 144 | 241528 | 2025-06-20 |
+| [Marcel Mamula](https://github.com/marcelmamula) | 79 | 142260 | 2026-01-12 |
+| [Gabriele Puliti](https://github.com/Wabri) | 1 | 68 | 2024-06-12 |
+| [Janine Fuchs](https://github.com/ja9fuchs) | 1 | 4 | 2024-04-15 |
+

README.md

@@ -172,11 +172,12 @@ Potential issues:
    - To avoid issues, use the playbooks on fresh systems or ensure thorough cleanup of any previous SAP installations.
 
 
-## License
-[Apache 2.0](./LICENSE)
+## Contributing
+For information on how to contribute, please see our [contribution guidelines](https://sap-linuxlab.github.io/initiative_contributions/).<br>
+You can find more information about repository specific guidelines at [How to contribute](./docs/CONTRIBUTING.md).
 
 ## Contributors
-Key contributors are shown within the [contributors](./docs/CONTRIBUTORS.md) file.
+We welcome contributions to this collection. For a list of all contributors and information on how you can get involved, please see our [CONTRIBUTORS document](./CONTRIBUTORS.md).
 
-## Contributing
-You can find more information about ways you can contribute at [How to contribute](./docs/CONTRIBUTING.md).
+## License
+[Apache 2.0](./LICENSE)