Add correct preselection to CMTY link (nuxt#787)

Author: TheAlexLichter

.github/ISSUE_TEMPLATE.md

@@ -1,7 +1,6 @@
 <!--
 IMPORTANT: Please use the following link to create a new issue:
 
-https://nuxtjs.cmty.io/issues/new
-
+https://cmty.app/nuxt/issues/new?repo=docs
 If your issue was not created using the app above, it will be closed immediately.
 -->