Describe the bug

Completions for bash include a description of the command in the completions. This requires a user to delete the entire description before he/she is able to enter the command.

$ gh --version
gh version 2.0.0 (2021-08-23)
https://github.com/cli/cli/releases/tag/v2.0.0

Steps to reproduce the behavior

In a terminal running bash.

1. Type gh Tab
2. See that the completion provided looks like this...

$ gh actions     (Learn about working with GitHub actions)

Tab

$ gh alias       (Create command shortcuts)

etc, etc

Expected vs actual behavior

The completion should not also include a description of the command for bash.