Update README.md

Author: Joiversen

README.md

@@ -2,6 +2,6 @@
 
 [![Build Status](https://dev.azure.com/tbk0196/OS2IoT-backend/_apis/build/status/OS2iot.OS2IoT-backend?branchName=master)](https://dev.azure.com/tbk0196/OS2IoT-backend/_build/latest?definitionId=2&branchName=master)
 
-Documentation is available at: https://os2iot.readthedocs.io/en/latest/
+Documentation is available at: https://os2iot.readthedocs.io/en/latest/ or [OS2IoT-docs](https://github.com/OS2iot/OS2IoT-docs)
 
 Start using docker-compose see: https://github.com/OS2iot/OS2IoT-docker