[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

pytest_jupyter/jupyter_server.py

@@ -282,7 +282,9 @@ async def my_test(jp_fetch):
     .. code-block:: python
 
         async def my_test(jp_fetch):
-            response = await jp_fetch("api", "spec.yaml", method='POST', body=json.dumps({'parameter': 'value'}))
+            response = await jp_fetch(
+                "api", "spec.yaml", method="POST", body=json.dumps({"parameter": "value"})
+            )
             ...
 
     """