Update feature_request.md

Author: hathach

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,8 +1,8 @@
 ---
 name: Feature request
 about: Suggest an idea for this project
-title: "[Feature]"
-labels: ''
+title: ''
+labels: 'Feature'
 assignees: ''
 
 ---