Update feature_request.md

.github/ISSUE_TEMPLATE/feature_request.md

@@ -7,14 +7,14 @@ assignees: ''
 
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-**Is your feature request related to a problem? Please describe.**
+## Description
 A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
 
-**Describe the solution you'd like**
+## Solution
 A clear and concise description of what you want to happen.
 
-**Describe alternatives you've considered**
+## Alternatives
 A clear and concise description of any alternative solutions or features you've considered.
 
-**Additional context**
+## Additional context
 Add any other context or screenshots about the feature request here.