updated sb-controller helm repo name (#164)

Author: geoffrey1330

charts/README.md

@@ -166,7 +166,7 @@ The following table lists the configurable parameters of the latest Simplyblock
 
 ```console
 
-helm repo add spdk-csi https://raw.githubusercontent.com/simplyblock-io/spdk-csi/master/charts/sb-controller
+helm repo add sb-controller https://raw.githubusercontent.com/simplyblock-io/spdk-csi/master/charts/sb-controller
 
 helm repo update