Update SPONSORS.rst

SPONSORS.rst

@@ -3,7 +3,17 @@ Become a Sponsor!
 
 Your donation will help on the development of technologies around the Icinga ecosystem. This work can't be done without the financial support of organizations like yours. When you become a sponsor we will acknowledge your donation and we will include your link on this list and on other communications such as conferences and social media whenever appropriate.
 
-|Donate| or `contact us <https://www.linuxfabrik.ch/kontakt>`_.
+If you like to support our work, please consider donating
+
+* GitHub Sponsors: |GitHubSponsors|
+* PayPal: |PayPal|
+
+.. |PayPal| image:: https://img.shields.io/badge/Donate-PayPal-green.svg
+   :target: https://www.paypal.com/donate/?hosted_button_id=7AW3VVX62TR4A
+
+.. |GitHubSponsors| image:: https://img.shields.io/github/sponsors/Linuxfabrik?label=GitHub%20Sponsors
+   :target: https://github.com/sponsors/Linuxfabrik
+
 
 
 Sponsors
@@ -13,8 +23,3 @@ We are happy to mention you as a sponsor.
 
 * `Universitätsspital Basel, Schweiz <https://www.unispital-basel.ch/>`_
 * `Sopra Steria AG, Schweiz <https://www.soprasteria.ch/de>`_
-* `Linuxfabrik GmbH, Schweiz <https://www.linuxfabrik.ch/>`_
-
-
-.. |Donate| image:: https://img.shields.io/badge/Donate-PayPal-green.svg
-   :target: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=7AW3VVX62TR4A&source=url