chore: Better description for Discussions

Author: franky47

.github/ISSUE_TEMPLATE/config.yml

@@ -2,4 +2,4 @@ blank_issues_enabled: false
 contact_links:
   - name: Discussions
     url: https://github.com/FortySevenEffects/arduino_midi_library/discussions
-    about: Please ask and answer questions here.
+    about: Not a bug or a feature request ? Discuss your problem, ask for help or show what you've built in Discussions.