Update IPython/core/display.py

IPython/core/display.py

@@ -625,6 +625,7 b' class JSON(DisplayObject):'
     def _repr_json_(self):
         return self._data_and_metadata()
 
+
 _css_t = """var link = document.createElement("link");
 	link.rel = "stylesheet";
 	link.type = "text/css";