chore: workflow will now comment on PRs

.github/workflows/prettier-check.yml

@@ -2,10 +2,13 @@ name: Check Prettier syntax
 
 # This action works with pull requests and pushes on the main branch
 on:
-  pull_request:
+  pull_request_target:
   push:
     branches: [main]
 
+permissions:
+    pull_requests: write
+
 jobs:
   prettier:
     name: Prettier Check
@@ -20,7 +23,6 @@ jobs:
         with:
           file_pattern: '**'
           config_path: ./.prettierrc.yml
-          fail_on_error: true
 
 
       # This step only runs if prettier finds errors causing the previous step to fail
@@ -30,4 +32,13 @@ jobs:
         shell: bash
         run: |
           echo "The following files are not formatted:"
-          echo "${{steps.prettier-run.outputs.prettier_output}}"
+          echo "${{steps.prettier-run.outputs.prettier_output}}"
+        
+      - name: Comment on PRs if failed checks.
+        if: ${{ failure() }} && github.event_name == 'pull_request':
+        uses: thollander/[email protected]
+        with:
+          message: |
+            The following files have not been formatted with Prettier:
+            ${{steps.prettier-run.outputs.prettier_output}}
+            Please go back in and reformat them as necessary.