Update Firmware inventory "Description" attribute string name

Tested: On Master "2.8.0-dev-1222-ga8a516af1"

Change-Id: If5a12fab3414549011eadaa919f60b3f7fc209a4
Signed-off-by: Sushil Singh <susilsi7@in.ibm.com>
diff --git a/lib/redfish_code_update_utils.robot b/lib/redfish_code_update_utils.robot
index dc0e088..648cc8f 100644
--- a/lib/redfish_code_update_utils.robot
+++ b/lib/redfish_code_update_utils.robot
@@ -18,7 +18,7 @@
 
     ${image_info}=  Redfish.Get Properties  /redfish/v1/UpdateService/FirmwareInventory/${image_id}
 
-    ${sw_functional}=  Run Keyword If  '${image_info["Description"]}' == 'BMC update'
+    ${sw_functional}=  Run Keyword If  '${image_info["Description"]}' == 'BMC image'
     ...    Redfish.Get Attribute  /redfish/v1/Managers/bmc  FirmwareVersion
     ...  ELSE
     ...    Redfish.Get Attribute  /redfish/v1/Systems/system  BiosVersion