docs: update issue template chooser config

***NO_CI***

.github/ISSUE_TEMPLATE/config.yml

+blank_issues_enabled: false
+contact_links:
+  - name: Wiki.js Community Support
+    url: https://github.com/Requarks/wiki/discussions?discussions_q=category%3A%22Help+%2F+Questions%22
+    about: Please ask and answer questions here.