Fix validate error display issue

components/device-mgt/org.wso2.carbon.device.mgt.ui/src/main/resources/jaggeryapps/devicemgt/app/conf/config.json

@@ -46,7 +46,7 @@
   },
   "groupValidationConfig": {
     "groupNameJSRegEx": "^[\\S]{3,30}$",
-    "groupNameRegExViolationErrorMsg": "Provided group name is invalid.",
+    "groupNameRegExViolationErrorMsg": "Group name should be in minimum 3 characters long and should not include any whitespaces.",
     "groupNameHelpMsg": "Should be in minimum 3 characters long and should not include any whitespaces."
   },
   "roleValidationConfig": {