Update Feature_request.md

.github/ISSUE_TEMPLATE/Feature_request.md

@@ -1,9 +1,11 @@
 ---
 name: Feature request
 about: Milvus-insight can't do all the things, but maybe it can do your things.
+labels: feat
 
 ---
 
 **Describe the feature:**
 
-**Describe a specific use case for the feature:**
+
+**Describe a specific use case for the feature:**