Update bug_report.md

Author: maple-underscore

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,7 +1,7 @@
 ---
 name: Bug report
 about: Create a report to help us improve
-title: "[Bug report]"
+title: "[Bug report] - "
 labels: bug,new topic
 assignees: maple-underscore