Update win_reboot.py

The included example for testing if the rebooted system is ready does not work.  Removing the exit from the command fixes this.

plugins/modules/win_reboot.py

@@ -102,7 +102,7 @@
 # Or you can make win_reboot validate exactly what you need to work before running the next task
 - name: Validate that the netlogon service has started, before running the next task
   ansible.windows.win_reboot:
-    test_command: 'exit (Get-Service -Name Netlogon).Status -ne "Running"'
+    test_command: '(Get-Service -Name Netlogon).Status -ne "Running"'
 '''
 
 RETURN = r'''