[DOCS] Add buildkite links to doc preview comments (elastic#175463)

.github/workflows/docs-preview-links.yml

@@ -6,21 +6,15 @@ on:
     paths:
       - '**.asciidoc'
 
+permissions:
+      pull-requests: write
 jobs:
   doc-preview:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/github-script@v6
-        name: Add doc preview links
+      - uses: elastic/docs/.github/actions/docs-preview@current
         with:
-          script: |
-            const pr = context.payload.pull_request;
-            const comment = `Documentation preview:
-              - ✨ [Changed pages](https://${context.repo.repo}_${pr.number}.docs-preview.app.elstc.co/diff)`;
-            
-            github.rest.issues.createComment({
-              issue_number: context.issue.number,
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              body: comment,
-            });
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          repo: ${{ github.event.repository.name }}
+          preview-path: 'guide/en/observability/master/index.html'
+          pr: ${{ github.event.pull_request.number }}