Description of problem: The current unit of storage is incorrectly mentioned as gigabytes, it should be gibibyte instead as per the unit specified in shorthand notation i.e. GiB

Prerequisites (if any, like setup, operators/versions):

Steps to Reproduce

1. Navigate to "Managing users and user resources" guide for self-managed users
2. Navigate to Chapter 11

Actual results: Unit should be gibibyte 

Expected results: Unit is gigabyte

Reproducibility (Always/Intermittent/Only Once):

Build Details:

Workaround:

Additional info: