Changed code example to be a code block

[Treyson-Grange]

Trac ticket number

N/A

Branch description

Updated the documentation to feature the code example within a dedicated code block, as illustrated here. This ensures coherence with the prevailing code formatting and styling standards.

Checklist

• This PR targets the main branch.
• The commit message is written in past tense, mentions the ticket number, and ends with a period.
• I have checked the "Has patch" ticket flag in the Trac system.
• I have added or updated relevant tests.
• I have added or updated relevant docs, including release notes if applicable.
• I have attached screenshots in both light and dark modes for any UI changes.

[github-actions]

Hello! Thank you for your contribution 💪

As it's your first contribution be sure to check out the patch review checklist.

If you're fixing a ticket from Trac make sure to set the "Has patch" flag and include a link to this PR in the ticket!

If you have any design or process questions then you can ask in the Django forum.

Welcome aboard ⛵️!

[Treyson-Grange]

Documentation is in a text box to not throw a blacken-docs error, as pass is a reserved word.