What were you trying to do that didn't work?

"used" is calculated with `total - available` since RHEL9.1, but the man free is not updated.

Please provide the package NVR for which bug is seen:

procps-ng-3.3.17-14.el9.src.rpm 

How reproducible:

Check man free

Steps to reproduce

N/A

Expected results

man free 

...

       used   Used or unavailable memory (calculated as total - available)

...

Actual results

man free

...

       used   Used memory (calculated as total - free - buffers - cache)

...