Fix sendStatus/status typo in Storage emulator (#3338)

Co-authored-by: Yuchen Shi <[email protected]>

Author: samtstern

src/emulator/storage/server.ts

@@ -99,7 +99,7 @@ export function createApp(
       });
     }
 
-    res.sendStatus(200).json({
+    res.status(200).json({
       message: "Rules updated successfully",
     });
   });