Use the right link for docs comment in PR

.github/workflows/comment-docs-download.yml

@@ -9,7 +9,7 @@ jobs:
     if: github.event.workflow_run.event == 'pull_request' && github.event.workflow_run.conclusion == 'success'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/github-script@v6
+      - uses: actions/github-script@v7
         with:
           script: |
             async function insertUpdateComment(owner, repo, issue_number, purpose, body) {
@@ -35,11 +35,20 @@ jobs:
 
             const {owner, repo} = context.repo;
             const run_id = ${{github.event.workflow_run.id}};
-            const pull_requests = ${{ toJSON(github.event.workflow_run.pull_requests) }};
-            if (!pull_requests.length) {
-                return core.error("This workflow doesn't match any pull requests!");
+
+            // Find the PR with the right sha, see https://github.com/orgs/community/discussions/25220
+            const response = await github.rest.search.issuesAndPullRequests({
+                q: 'repo:${{ github.repository }} is:pr sha:${{ github.event.workflow_run.head_sha }}',
+                per_page: 1,
+            })
+            const items = response.data.items
+            if (items.length < 1) {
+                return core.error("No matching pull requests found");
             }
+            const pullRequestNumber = items[0].number
+            console.info("Pull request number is", pullRequestNumber)
 
+            // get the list of artifacts
             const artifacts = await github.paginate(
                 github.rest.actions.listWorkflowRunArtifacts, {owner, repo, run_id}
             );
@@ -48,15 +57,18 @@ jobs:
                 return core.error(`No artifacts found`);
             }
 
-            if (artifacts.length !== 1) {
-                return core.error(`more than one artifact found`);
-            }
-            const link = `https://nightly.link/${owner}/${repo}/actions/artifacts/${artifacts[0].id}.zip`
+            for (const artifact of artifacts) {
+                if (artifact.name == "documentation") {
+                    const link = `https://nightly.link/${owner}/${repo}/actions/artifacts/${artifact.id}.zip`
+
+                    let body = `Here is the build version of the cookbook in this pull request: [documentation.zip](${link}), `;
+                    body += 'you can view it locally by unzipping `documentation.zip` and open the `index.html` with your favorite browser.';
 
-            let body = `Here is the build version of the cookbook in this pull request: [documentation.zip](${link}), `;
-            body += 'you can view it locally by unzipping `documentation.zip` and open the `index.html` with your favorite browser.';
+                    core.info("Review thread message body:", body);
+                    await insertUpdateComment(owner, repo, pullRequestNumber, "link-to-documentation", body);
 
-            core.info("Review thread message body:", body);
-            for (const pr of pull_requests) {
-                await insertUpdateComment(owner, repo, pr.number, "link-to-wheels", body);
+                    return;
+                }
             }
+
+            return core.error(`failed to find "documentation" artifact`);