website: build at canonical root baseURL, not the Pages subpath

The Hugo/Docsy site (#4858) rendered unstyled live. go-micro.dev is an
nginx proxy that maps `/` to micro.github.io/go-micro/, but the deploy
workflow built with `--baseURL "${{ steps.pages.outputs.base_url }}/"`,
which for this project repo is https://micro.github.io/go-micro/. That
prefixes every asset and link with /go-micro/, so through the proxy the
stylesheet resolves to go-micro.dev/go-micro/scss/... which maps to
micro.github.io/go-micro/go-micro/scss/... and 404s — no CSS.

Verified: the CSS is 200 at micro.github.io/go-micro/scss/...; the baked
/go-micro/ path 404s through the proxy; the root path (this fix) is 200.

Build at the canonical root baseURL (https://go-micro.dev/, already in
hugo.yaml) so assets are /scss/... — which the proxy maps correctly. This
matches how the old Jekyll site was configured (baseurl: "").

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CmdEY7pYmV5zzwCjNJ4ykL

.github/workflows/website.yml

@@ -54,7 +54,14 @@ jobs:
       - name: Install frontend dependencies
         run: npm ci
       - name: Build site
-        run: hugo --gc --minify --baseURL "${{ steps.pages.outputs.base_url }}/"
+        # go-micro.dev is served by an nginx proxy that maps `/` to
+        # micro.github.io/go-micro/ (see the deploy nginx.conf). The site must
+        # therefore be built at its canonical ROOT baseURL — not the Pages
+        # project subpath from configure-pages (https://micro.github.io/go-micro/).
+        # Building at the subpath prefixes every asset/link with /go-micro/, which
+        # becomes /go-micro/go-micro/ through the proxy and 404s, leaving the site
+        # unstyled. hugo.yaml already declares baseURL: https://go-micro.dev/.
+        run: hugo --gc --minify --baseURL "https://go-micro.dev/"
       - name: Upload Pages artifact
         uses: actions/upload-pages-artifact@v3
         with: