Typo fix in topic_yaml. Issue 40913

Author: apinnick

_topic_maps/_topic_map.yml

@@ -2942,7 +2942,7 @@ Topics:
     File: virt-delete-vms
   - Name: Managing virtual machine instances
     File: virt-manage-vmis
-  - Name: Controlling virtual machines states
+  - Name: Controlling virtual machine states
     File: virt-controlling-vm-states
   - Name: Accessing virtual machine consoles
     File: virt-accessing-vm-consoles