doc: update feature_request.md

Author: l-lin

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,22 +1,25 @@
 ---
-name: Feature request
+name: "\U0001F680 Feature request"
 about: Suggest an idea for this project
 title: ''
 labels: feature request
 assignees: ''
-
 ---
 
-> **Note:** We offer assistance for Angular >=8 projects only. Do not open an issue if this is regarding AngularJS issue.
+<!--
+Note: We offer assistance for Angular >=8 projects only. Do not open an issue if this is regarding AngularJS issue.
+-->
+
+# :rocket: Feature request
+
+## Is your feature request related to a problem? Please describe.
 
-**Is your feature request related to a problem? Please describe.**
 A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
 
-**Describe the solution you'd like**
+## Describe the solution you'd like
+
 A clear and concise description of what you want to happen.
 
-**Describe alternatives you've considered**
-A clear and concise description of any alternative solutions or features you've considered.
+## Describe alternatives you've considered
 
-**Additional context**
-Add any other context or screenshots about the feature request here.
+A clear and concise description of any alternative solutions or features you've considered.