Change discussion URL to Discord channel (#86)

Updated contact link for questions and discussions.

Author: kowczarz

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,5 @@
 blank_issues_enabled: false
 contact_links:
   - name: Questions and discussions
-    url: https://github.com/software-mansion-labs/expo-live-activity/discussions
-    about: Use this section to ask questions and discuss topics that are not related to bug reports or feature requests.
+    url: https://discord.gg/6wHaCbxU
+    about: expo-live activity channel Software Mansion discord