remove repeated heading within the .github/ISSUE_TEMPLATE/bug_report.md

Author: harryswift01

.github/ISSUE_TEMPLATE/bug_report.md

@@ -8,8 +8,6 @@ assignees: ''
 ---
 
 # Bug Report
-
-**Describe the bug**  
 <!-- A clear and concise description of the issue. -->
 
 ---