fix kubemark output error

Author: xieyanker

test/kubemark/pre-existing/README.md

@@ -23,7 +23,7 @@ resources provided by the VM at $MASTER_IP will serve as the kubemark master.
 ## Use Case
 
 The goal of the pre-existing provider is to use the kubemark tools with an
-existing kubermark master. It's meant to provide the developer with
+existing kubemark master. It's meant to provide the developer with
 additional flexibility to customize the cluster infrastructure and still use
 the kubemark setup tools.  The pre-existing provider is an **advanced** use
 case that requires the developer to have knowledge of setting up a kubemark

test/kubemark/resources/start-kubemark-master.sh

@@ -776,4 +776,4 @@ until [ "$(curl 127.0.0.1:8080/healthz 2> /dev/null)" == "ok" ]; do
 	fi
 done
 
-echo "Done for the configuration for kubermark master"
+echo "Done for the configuration for kubemark master"