[PR #7212/12708c38 backport][stable-7] fix typo (#7222)

fix typo (#7212)

(cherry picked from commit 12708c3848)

Co-authored-by: Андрей Неустроев <99169437+aneustroev@users.noreply.github.com>

plugins/modules/proxmox_kvm.py

@@ -524,7 +524,7 @@ options:
   virtio:
     description:
       - A hash/dictionary of volume used as VIRTIO hard disk. O(virtio='{"key":"value", "key":"value"}').
-      - Keys allowed are - C(virto[n]) where 0 ≤ n ≤ 15.
+      - Keys allowed are - C(virtio[n]) where 0 ≤ n ≤ 15.
       - Values allowed are -  C("storage:size,format=value").
       - C(storage) is the storage identifier where to create the disk.
       - C(size) is the size of the disk in GB.