chore: add description for feature-request

.github/ISSUE_TEMPLATE/config.yml

@@ -1,7 +1,7 @@
 contact_links:
   - name: Support Request
     url: https://github.com/emqx/emqx/discussions
-    about: Asking a question about usages, docs or anything you're insterested in.
+    about: Asking a question about usages, docs or anything you're insterested in
   - name: Support Request (CN)
     url: https://askemq.com
-    about: Feel free to visit our Chinese community for support if it is more convenient for you.
+    about: Feel free to visit our Chinese community for support if it is more convenient for you

.github/ISSUE_TEMPLATE/feature-request.yaml

@@ -6,6 +6,9 @@ body:
     id: feature
     attributes:
       label: What would you like to be added or enhanced?
+      description: |
+        Feature requests are unlikely to make progress as issues.
+        If you have a clear idea about this improvement, you can submit it as a design proposal to [EIP](https://github.com/emqx/eip)
     validations:
       required: true