Update read file action in bounty workflow

The read file action in the bounty workflow has been updated, replacing the previous manual method with a more efficient GitHub action. This action greatly simplifies the code, improving readability and ease of maintenance. The file path has also been corrected.

.github/workflows/bounty.yml

@@ -14,16 +14,16 @@ jobs:
 
       - name: Read Footer Content
         id: footer
-        run: |
-          content=$(cat .github/bounty-footer.md | jq -Rs .)
-          echo "::set-output name=content::$content"
+        uses: jaywcjlove/github-action-read-file@main
+        with:
+          path: docs/bounty-footer.md
       
       - name: Append Footer to Issue
         uses: actions/github-script@v7
         with:
           github-token: ${{secrets.GITHUB_TOKEN}}
           script: |
-            const issueComment = `${{ steps.footer.outputs.content }}`;
+            const issueComment = "${{ steps.footer.outputs.content }}";
             await github.rest.issues.createComment({
               issue_number: context.issue.number,
               owner: context.repo.owner,