Added Bin's wording to the Special action

Author: Michael Burke

snippets/machine-config-node-disruption-actions.adoc

@@ -11,7 +11,7 @@ When you make any of these changes, the node disruption policy determines which
 * *Reload*: For services, the MCO reloads the specified services without restarting the service.
 * *Restart*: For services, the MCO fully restarts the specified services.
 * *DaemonReload*: The MCO reloads the systemd manager configuration.
-* *Special*: This is an internal MCO-only action and cannot be set by the user.
+* *Special*: This is an internal MCO-only action that is set by default for changes to the `/etc/containers/registries.conf` file. When this action is set, the MCO determines if the node cordon and drain is required or not, based on the changed content in the `registries.conf`. You can override this default, but you cannot set this action for another path or service. However, it is not recommended to override this setting.
 
 [NOTE]
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