Description of problem:

The documentation page within "Authentication Sources" page in Satellite WebUI redirects to "Administering Red Hat Satellite" documentation which does not have any/enough information about Authentication Sources.

Version-Release number of selected component (if applicable): Satellite 6.15.0

How reproducible: Always

Steps to Reproduce:
1. Navigate to Satellite WebUI -> Administer -> Authentication Sources
2. Click on the hyperlink "Learn more about External authentication in the documentation."

Actual results: The page is redirected to below URL which does not have enough/any information about External Authentication.

https://access.redhat.com/documentation/en-us/red_hat_satellite/6.15/html/administering_red_hat_satellite

Expected results: The page should be redirected to below URL:

https://access.redhat.com/documentation/en-us/red_hat_satellite/6.15/html-single/installing_satellite_server_in_a_connected_network_environment/index#Configuring_External_Authentication_satellite