Description of problem:

Message for simple content access on the edit organization page can be improved as follows:

~~~
Simple Content Access is mandatory from Red Hat Satellite 6.16.
~~~

Also, a hyperlink can be provided for the document:

Document link:

1. https://access.redhat.com/documentation/en-us/red_hat_satellite/6.15/html-single/release_notes/index?lb_target=preview#deprecated-functionality

Version-Release number of selected component (if applicable):

6.15

How reproducible:

Newly installed Satellite 6.15

Steps to Reproduce:
1. Newly installed Satellite 6.15

Actual results:

Current Message: Simple Content Access will be required for all organizations in Satellite 6.16.

Expected results:

We can provide the below message with a hyperlink to the documentation.

~~~
Simple Content Access is mandatory from Red Hat Satellite 6.16.
~~~

QE Tracker for https://issues.redhat.com/browse/SAT-22031
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2255222