add package.json to docs workflow

Author: Psy-Fer

.github/workflows/docs.yml

@@ -29,6 +29,8 @@ jobs:
 
       - name: Install pnpm
         uses: pnpm/action-setup@v4
+        with:
+          package_json_file: docs/package.json
 
       - name: Setup Node
         uses: actions/setup-node@v4