Update README.md

Author: wiiznokes

Diff for: README.md

@@ -38,9 +38,11 @@ Finally, you will need to set up the applet in cosmic-settings.
 ## Logs
 
 ```
-journalctl --user _EXE=/usr/bin/cosmic-session -r | grep cosmic_clipboard_manager | less
+journalctl -p 3 -xb --user _EXE=/usr/bin/cosmic-panel | grep com.wiiznokes.CosmicClipboardManager
 ```
-
+-p 3 means priority error
+-x add information
+b means since last boot
 
 ## Contributing