Update bug_report.md

Author: hieuwu

.github/ISSUE_TEMPLATE/bug_report.md

@@ -7,26 +7,26 @@ assignees: ''
 
 ---
 
-**Describe the bug**
+## :bug: Describe the bug
 A clear and concise description of what the bug is.
 
-**Steps To Reproduce**
+## :runner: Steps To Reproduce
 Steps to reproduce the behavior:
 1. Go to '...'
 2. Click on '....'
 3. Scroll down to '....'
 4. See error
 
-**Expected behavior**
+## :white_check_mark: Expected behavior
 A clear and concise description of what you expected to happen.
 
-**Screenshots**
+## :framed_picture: Screenshots
 If applicable, add screenshots to help explain your problem.
 
-**Smartphone (please complete the following information):**
+## :iphone: Devices (please complete the following information):**
  - Device: [e.g. iPhone6]
  - OS: [e.g. iOS8.1]
  - Version [e.g. 22]
 
-**Additional context**
+## :construction: Additional context
 Add any other context about the problem here.