Backport: ovirt_vm fix quotas example (#69942)

* ovirt_vm: fix quotas example

* add changelog

changelogs/fragments/69942-ovirt_vm-fix-quotas-example.yml

@@ -0,0 +1,2 @@
+minor_changes:
+- "ovirt_vm: fix quotas example"

lib/ansible/modules/cloud/ovirt/ovirt_disk.py

@@ -264,15 +264,16 @@ EXAMPLES = '''
 
 # Defining a specific quota while creating a disk image:
 # Since Ansible 2.5
-- ovirt_quotas_facts:
+- ovirt_quotas_info:
     data_center: Default
     name: myquota
+  register: quota
 - ovirt_disk:
     name: mydisk
     size: 10GiB
     storage_domain: data
     description: somedescriptionhere
-    quota_id: "{{ ovirt_quotas[0]['id'] }}"
+    quota_id: "{{ quota.ovirt_quotas[0]['id'] }}"
 
 # Upload an ISO image
 # Since Ansible 2.8