Description of problem:
RHUI 2.1 docs links are missing from the main RHUI docs page on docs.redhat.com - clicking the "Red Hat Update Infrastructure" link from https://access.redhat.com/site/documentation/en-US/index.html takes you to https://access.redhat.com/site/documentation/en-US/Red_Hat_Update_Infrastructure/ which only lists up to RHUI 2.0.

It should include link to RHUI 2.1 docs https://access.redhat.com/site/documentation/en-US/Red_Hat_Update_Infrastructure/2.1/index.html

Version-Release number of selected component (if applicable):
RHUI 2.1

How reproducible:
Always.

Steps to Reproduce:
1. Go to docs.redhat.com and click on "Red Hat Update Infrastructure", or directly navigate to https://access.redhat.com/site/documentation/en-US/index.html
2.
3.

Actual results:
Listing only goes up to RHUI 2.0.  Link to 2.1 content is missing.

Expected results:
RHUI 2.1 documentation entry that links to https://access.redhat.com/site/documentation/en-US/Red_Hat_Update_Infrastructure/2.1/index.html

Additional info: