chore: add workflow linting paths trigger

Add workflow's own path to pull_request trigger for:
- .github/workflows/doctoc.yml
- .github/workflows/markdown-link-check.yml

Author: MikeMcC399

.github/workflows/doctoc.yml

@@ -5,6 +5,7 @@ on:
     paths:
       - "README.md"
       - "docs/BestPractices.md"
+      - ".github/workflows/doctoc.yml"
 
 permissions:
   contents: read

.github/workflows/markdown-link-check.yml

@@ -5,6 +5,7 @@ on:
     paths:
       - "**/*.md"
       - "markdown_link_check_config.json"
+      - ".github/workflows/markdown-link-check.yml"
 
 permissions:
   contents: read