Add bug-report to FAQ

docs/source/misc/FAQ.md

 # FAQ
 
-Frequently Asked Questions
\ No newline at end of file
+Frequently Asked Questions
+
+**Where can I get help when I encounter a bug?**  
+Please [open an issue](https://jugit.fz-juelich.de/ped-dyn-emp/petrack/-/issues/new) in our GitLab repository. Mention the expected behaviour, the bug and don't forget to mention the version of PeTrack you used as well as your operaating system.
\ No newline at end of file