fix(issue templates): updated discord invite link

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,5 @@
 blank_issues_enabled: false
 contact_links:
   - name: "🆘 Individual troubleshooting help: Please go to the Discord Trio Server"
-    url: https://discord.gg/fCY5svg4
+    url: https://discord.com/invite/FnwFEFUwXE
     about: Are you having an issue with your individual setup? Please first go to the Discord Trio Server and post there, with details of your setup (App version, pump, CGM, and CGM app) and the issue you are observing