fix JavaDocs workflow

Author: goneall

.github/workflows/docs.yml

@@ -29,4 +29,4 @@ jobs:
       uses: peaceiris/actions-gh-pages@v3
       with:
         github_token: ${{ secrets.GITHUB_TOKEN }}
-        publish_dir: ./target/site/apidocs
+        publish_dir: ./target/reports/apidocs