Update install-smb-csi-driver.md

Author: andyzhangx

docs/install-smb-csi-driver.md

@@ -1,6 +1,6 @@
-## Install smb CSI driver on a Kubernetes cluster
+## Install SMB CSI driver on a Kubernetes cluster
 
- - [install CSI driver master version](./install-csi-driver-master.md)
+ - [install CSI driver master version](./install-csi-driver-master.md)(only for testing purpose)
  - [install CSI driver v1.7.0 version](./install-csi-driver-v1.7.0.md)
  - [install CSI driver v1.6.0 version](./install-csi-driver-v1.6.0.md)
  - [install CSI driver v1.5.0 version](./install-csi-driver-v1.5.0.md)