Fix: 'describe' command doesn't appear in 'help'

[Kevin-Prichard]

Fix for the 'describe' command not appearing when user requests 'help'.

Description

'describe' doesn't appear because that string 'describe' also appears in describe()'s aliases. This causes show_help() to skip it altogether, because aliases are added to COMMANDS with 'hidden=True' (in special/main.py:register_special_command()), which overwrites the original 'describe' entry in COMMANDS.

Fix: I removed 'describe' from describe()'s aliases list

Checklist

• [ ] I've added this contribution to the CHANGELOG.md file.

[amjith]

Thank you for the fix. 😄