Fix test name and tag mismatched

Changes:
     - Changes made according to coding guideline
       to match the tag name and test cases name.

Tested:
     - NA

Change-Id: I4cd1942a2c00234bc32e114dfefd06a7134da064
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/redfish/managers/test_bmc_ipv6.robot b/redfish/managers/test_bmc_ipv6.robot
index 164d77d..19e4708 100644
--- a/redfish/managers/test_bmc_ipv6.robot
+++ b/redfish/managers/test_bmc_ipv6.robot
@@ -82,7 +82,7 @@
 
 
 
-Modify IPv6 Address And verify
+Modify IPv6 Address And Verify
     [Documentation]  Modify IPv6 address and verify.
     [Tags]  Modify_IPv6_Address_And_Verify