removed extra bracket from workbench scenario

crowdsourcehinter/crowdsourcehinter.py

@@ -329,7 +329,7 @@ class CrowdsourceHinter(XBlock):
             """
                 <verticaldemo>
                     <crowdsourcehinter>
-                        {"generic_hints": "Make sure to check for basic mistakes like typos", "initial_hints": {"michiganp": "remove the p at the end."}, "michigann": "too many Ns on there."}, "hinting_element": "i4x://edX/DemoX/problem/Text_Input"}
+                        {"generic_hints": "Make sure to check for basic mistakes like typos", "initial_hints": {"michiganp": "remove the p at the end.", "michigann": "too many Ns on there."}, "hinting_element": "i4x://edX/DemoX/problem/Text_Input"}
                     </crowdsourcehinter>
                  </verticaldemo>
             """