Update csi-debug.md

Author: andyzhangx

docs/csi-debug.md

@@ -31,6 +31,12 @@ $ kubectl logs csi-smb-node-cvgbs -c smb -n kube-system > csi-smb-node.log
  - check cifs mount inside driver
 ```console
 kubectl exec -it csi-smb-node-cvgbs -n kube-system -c smb -- mount | grep cifs
+```
+
+ - get Windows csi-proxy logs inside driver
+```console
+kubectl exec -it csi-smb-node-win-xxxxx -n kube-system -c smb cmd
+type c:\k\csi-proxy.err.log
 ```
 
 #### Update driver version quickly by editing driver deployment directly