Fix small typo in Options documentation header

[Emilien-Foissotte]

Description

Fix a small typo in documentation Option Markdown header

The solution

Documentation only, no source code modified.

All other modification besides L11 are done by prettier Markdown formatter

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[nitsanavni]

Thank you @Emilien-Foissotte !
If you're ever in the mood, you're welcome to join our weekly mob sessions working on this project.