Fix typo in the code and documentation

Change-Id: I4fa01e4790ba3a50d8a59a5a85e6781bd8f539d1
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/lib/common_utils.robot b/lib/common_utils.robot
index daaf139..e9bbfaa 100755
--- a/lib/common_utils.robot
+++ b/lib/common_utils.robot
@@ -712,7 +712,7 @@
 Configure Initial Settings
     [Documentation]  Restore old IP and route.
     ...  This keyword requires initial settings viz IP address,
-    ...  Network Mask, default gatway and serial console IP and port
+    ...  Network Mask, default gateway and serial console IP and port
     ...  information which should be provided in command line.
 
     [Arguments]  ${host}=${OPENBMC_HOST}  ${mask}=${NET_MASK}