Update bug_report.md

Author: catfan

.github/ISSUE_TEMPLATE/bug_report.md

@@ -5,14 +5,19 @@ about: Create a report to help us improve
 
 **Information**
 - Version of Medoo:
+- Version of PHP:
 - Type of Database (MySQL, MSSQL, SQLite...):
-- System (Liunx\Windows\Mac):
+- System (Liunx|Windows|Mac):
 
 **Describe the Problem**
 A clear and concise description of what the problem is.
 
 **Detail Code**
 The detail code you are using causes the problem.
+```php
+// Write your PHP code here
+
+```
 
 **Expected output**
-A clear and concise description of what output you expected.
+A clear and concise description of what output you expected.