Ovirt update vm migrate docs backport (#58717)

* ovirt update vm migration domunetation (#58577)

* init update docs

* Update lib/ansible/modules/cloud/ovirt/ovirt_vm.py

Co-Authored-By: Alicia Cozine <879121+acozine@users.noreply.github.com>

* add changelog

changelogs/fragments/58577-ovirt_update_vm_migration_domunetation.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - ovirt update vm migration domunetation BZ(https://bugzilla.redhat.com/show_bug.cgi?id=1724535)

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

@@ -770,7 +770,7 @@ options:
         version_added: "2.8"
     force_migrate:
         description:
-            - "If I(true), the VM will migrate even if it is defined as non-migratable."
+            - If I(true), the VM will migrate when I(placement_policy=user-migratable) but not when I(placement_policy=pinned).
         version_added: "2.8"
         type: bool
     migrate: