Update config.yml

Author: hathach

.github/ISSUE_TEMPLATE/config.yml

@@ -3,3 +3,6 @@ contact_links:
   - name: Adafruit Support Forum
     url: https://forums.adafruit.com
     about: If you have other questions or need help, post it here.
+  - name: TinyUSB Arduino Discussion
+    url: https://github.com/adafruit/Adafruit_TinyUSB_Arduino/discussions
+    about: If you have other questions or need help, post it here.