change template wording

Author: darylhjd

.github/ISSUE_TEMPLATE/feature-request.md

@@ -8,7 +8,7 @@ assignees: ''
 ---
 
 **Is your feature request related to a problem? Please describe.**
-A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+A clear and concise description of what the problem is (e.g. I'm always frustrated when...)
 
 **Describe the solution you'd like**
 A clear and concise description of what you want to happen.