proofread blank template

Author: 2bndy5

.github/ISSUE_TEMPLATE/maintainers-only.md

@@ -1,12 +1,12 @@
 ---
 name: Maintainers' note
-about: ideas related to maintaining the cpp-linter-action source code
+about: For ideas related to maintaining the cpp-linter-action source code
 title: ''
 labels: ''
 assignees: ''
 
 ---
 
-This template is intended only for maintainers of cpp-linter org.
+This issue template is intended only for maintainers of cpp-linter org.
 
-Only use this template if your query is **not** related to a problem or feature.
+Only use this issue template if your query is **not** related to a problem or feature.