Add link to community call in readme

README.md

@@ -17,6 +17,8 @@ You can use the [AntennaPod Forum](https://forum.antennapod.org/) for discussion
 
 Bug reports and feature requests can be submitted [here](https://github.com/AntennaPod/AntennaPod/issues) (please read the [instructions](https://github.com/AntennaPod/AntennaPod/blob/master/CONTRIBUTING.md) on how to report a bug and how to submit a feature request first!).
 
+We also hold regular community calls to discuss anything AntennaPod-related. [Come join the next call](https://forum.antennapod.org/t/monthly-community-call/1869)!
+
 ## Help to test AntennaPod
 AntennaPod has many users and we don't want them to run into trouble when we add a new feature. It's important that we have a significant group test our app, so that we know all possible combinations of phones, Android versions and use cases work as expected. Check out our wiki on how to join our [Beta testing program](https://antennapod.org/documentation/general/beta)! If a bug is reported during the beta period, chances are high that it will be fixed before the stable version. If it is reported later, fixing might take another full beta cycle. So definitely let us know if something is not right.