SerivceNow Role Needs to be Updated to Reflect Change in SerivceNow Application

[dutchrapley]

https://docs.rundeck.com/docs/learning/howto/sn-midserver.html
https://docs.rundeck.com/docs/manual/integrations/servicenow-app.html

The documentation references

x_runde_rundeck_it.rundeck_app_user

This has been changed to

x_pd_process_autom.app_user

The documentation needs to be updated accordingly.