Fix documentation typo

Change-Id: I9f7d9368bb2b042251463ed6744b7133a8ac48d8
Signed-off-by: Sivas SRR <sivas.srr@in.ibm.com>
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 cb5041b..13a1d1a 100644
--- a/redfish/account_service/test_user_account.robot
+++ b/redfish/account_service/test_user_account.robot
@@ -12,7 +12,7 @@
 ** Test Cases **
 
 Verify AccountService Available
-    [Documentation]  Verify Redfish AccountService is available.
+    [Documentation]  Verify Redfish account service is available.
     [Tags]  Verify_AccountService_Available
 
     ${resp} =  redfish_utils.Get Attribute  /redfish/v1/AccountService  ServiceEnabled