🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Author: gcf-owl-bot[bot]

.github/workflows/ci.yaml

@@ -46,3 +46,15 @@ jobs:
           node-version: 14
       - run: npm install
       - run: npm run lint
+  docs:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 14
+      - run: npm install
+      - run: npm run docs
+      - uses: JustinBeckwith/linkinator-action@v1
+        with:
+          paths: docs/