Update 01_bug-report.md

Author: syuilo

.github/ISSUE_TEMPLATE/01_bug-report.md

@@ -7,24 +7,24 @@ assignees: ''
 
 ---
 
-## Summary
+## 💡 Summary
 
 <!-- Tell us what the bug is -->
 
-## Expected Behavior
+## 🙂 Expected Behavior
 
 <!--- Tell us what should happen -->
 
-## Actual Behavior
+## ☹️ Actual Behavior
 
 <!--- Tell us what happens instead of the expected behavior -->
 
-## Steps to Reproduce
+## 📝 Steps to Reproduce
 
 1.
 2.
 3.
 
-## Environment
+## 📌 Environment
 
 <!-- Tell us where on the platform it happens -->