ci: Fix reference between jobs in GitHub Pages workflow

The `publish` job previously declared a dependency on a job named `build-web`
but that job is actually called `build`.

https://phabricator.endlessm.com/T35699

Author: wjt

.github/workflows/github-pages.yml

@@ -68,7 +68,7 @@ jobs:
   publish:
     name: Publish to GitHub Pages
     needs:
-      - build-web
+      - build
     runs-on: ubuntu-latest
     steps:
       - id: deploy