Update custom-rule-request.md

Author: hoothin

.github/ISSUE_TEMPLATE/custom-rule-request.md

@@ -10,7 +10,7 @@ assignees: ''
 ---
 
 **The url of site**
-The example urls of site. Do not paste only domain without pathname.
+The example urls of site. **Do not paste only domain without pathname**.
 
 **Is your request related to a problem? Please describe.**
 A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]