Fixed typo in doc

docs/README_client.md

@@ -377,12 +377,12 @@ vmdel "exam ISC_433 PCO"
 
 Set the VM access for VM `89649fe3-4940-4b77-929e-50903789cd87` with: `VM_LIST` and `VM_DESTROY` for user `student@nexus.org`:
 ```
-vmsetaccess 89649fe3-4940-4b77-929e-50903789cd87 student@nexus.org VM_LIST VM_DESTROY
+vmaddaccess 89649fe3-4940-4b77-929e-50903789cd87 student@nexus.org VM_LIST VM_DESTROY
 ```
 
 Set VM access for VMs matching the "alpine" pattern with: `VM_START` and `VM_STOP` for user `student@nexus.org`:
 ```
-vmsetaccess alpine student@nexus.org VM_START VM_STOP
+vmaddaccess alpine student@nexus.org VM_START VM_STOP
 ```
 
 Remove VM access for `student@nexus.org` from VM `89649fe3-4940-4b77-929e-50903789cd87`: