Merge pull request thingsboard#10711 from thingsboard/AlexDoanTB-patch-2

Update feature_request.md

.github/ISSUE_TEMPLATE/feature_request.md

@@ -18,3 +18,8 @@ A clear and concise description of any alternative solutions or features you've
 
 **Additional context**
 Add any other context or screenshots about the feature request here.
+
+_____________________________________________________
+**Disclaimer** 
+
+We appreciate your contribution whether it is a bug report, feature request, or pull request with improvement (hopefully). Please comply with the [Community ethics policy](https://docs.github.com/en/site-policy/acceptable-use-policies/github-acceptable-use-policies)), and do not expect us to answer your requests immediately. Also, do not treat *GitHub issues* as a support channel.