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

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

jupyter_ydoc/ynotebook.py

@@ -124,9 +124,7 @@ def append_cell(self, value: Dict[str, Any]) -> None:
         ycell = self.create_ycell(value)
         self._ycells.append(ycell)
 
-    def set_cell(
-        self, index: int, value: Dict[str, Any]
-    ) -> None:
+    def set_cell(self, index: int, value: Dict[str, Any]) -> None:
         """
         Sets a cell into indicated position.