Fix test cases name tags under redfish directory

Change-Id: Icec85bd3b11f541c185a9242191096774d04290e
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/redfish/account_service/test_user_account.robot b/redfish/account_service/test_user_account.robot
index d38492a..dd69b0a 100644
--- a/redfish/account_service/test_user_account.robot
+++ b/redfish/account_service/test_user_account.robot
@@ -215,7 +215,7 @@
 
 Verify Operator User Privilege
     [Documentation]  Verify operator user privilege.
-    [Tags]  Verify_operator_User_Privilege
+    [Tags]  Verify_Operator_User_Privilege
 
     Redfish Create User  admin_user  TestPwd123  Administrator  ${True}
     Redfish Create User  operator_user  TestPwd123  Operator  ${True}