style: description field

Signed-off-by: Thomas Leterme <thomas.leterme@corp.ovh.com>

Author: Bxota

doc/ovhcloud_cloud_storage_file_share_create.md

@@ -9,7 +9,7 @@ ovhcloud cloud storage file share create <region> [flags]
 ### Options
 
 ```
-      --availability-zone string   Availability zone within the region
+      --availability-zone string   Availability zone (required in 3AZ regions)
       --description string         Share description
       --editor                     Use a text editor to define parameters
       --from-file string           File containing parameters