ci: don't build all features when building docs

Author: gadomski

.github/workflows/ci.yml

@@ -139,4 +139,4 @@ jobs:
       - uses: Swatinem/rust-cache@v2
       - uses: DavidAnson/markdownlint-cli2-action@v20
       - name: Doc
-        run: cargo doc --workspace --all-features
+        run: cargo doc --workspace