Add screenshot for leave computer audio in Zoom

Author: ann0see

_posts/2021-04-18-Jamulus-Video.md

@@ -76,7 +76,9 @@ Before joining a meeting, you can select to not use "Computer Audio" by selectin
 
 ![Arrow at mute button at bottom left of Zoom](https://github.com/user-attachments/assets/4cdcecf8-5b06-406d-9956-ad0b8b647f87)
 
-Now select "Leave Computer Audio".
+Now select "Leave Computer Audio":
+
+![Popover of audio settings with Leave Computer Audio button](https://github.com/user-attachments/assets/30394108-819e-4cd8-966b-3f13279d8309)
 
 ## Advanced setup