fix: scope Vale linting to docs/blog/src, exclude project_management

Author: kristopherjturner

.github/workflows/deploy.yml

@@ -34,7 +34,7 @@ jobs:
       - name: Set up Vale
         uses: errata-ai/vale-action@v2
         with:
-          files: .
+          files: docs, blog, src
 
       - name: Build site
         run: npm run build