chore: add link to Discussions

Author: ldez

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,8 @@
 blank_issues_enabled: false
 contact_links:
+  - name: Questions
+    url: https://github.com/go-acme/lego/discussions
+    about: If you have a question, or are looking for advice, please post on our Discussions section!
   - name: lego documentation
     url: https://go-acme.github.io/lego/
-    about: Please take a look to our documenation.
+    about: Please take a look to our documentation.