Update issue templates

.github/ISSUE_TEMPLATE/1--phone-number-format-issue.md

@@ -2,17 +2,18 @@
 name: 1. Phone number format issue
 about: For any phone number format related issues (such as cannot detect a certain
   phone number)
-title: ''
+title: "[Phone number format]"
 labels: ''
 assignees: Bossa573
 
 ---
 
-**These items must be provided are required**
+## These items must be provided
 
 1. Real sample input (dummy phone number is fine, don't leave personal info)
 2. Expected output
 3. Reference docs/website showing that the phone number format should be valid, government websites, 3rd party websites, or even Wikipedia pages are fine.
-4. **Make sure your reported phone number is a mobile phone number - landline, VoIP, or any other phone number formats are not supported**
 
-**Creating a PR directly instead of creating an issue is much appreciated, thank you very much**
+## Important notes
+- Make sure your reported phone number is a mobile phone number - landline, VoIP, or any other phone number formats are not supported
+- Creating a PR directly instead of creating an issue is much appreciated, thank you very much