Prerequisites

• I have searched existing issues to ensure this feature hasn't already been requested
• I have tested using the latest version of docs-builder

What problem are you trying to solve?

I'm using a stepper with something like:

:::::{stepper}

::::{step} title {{ml}} test
step content...
::::
:::::

The {{ml}} substitution is not rendered as "machine learning".

Proposed Solution

Allow substitutions in the step titles :)

Examples and Research

No response

Alternative Solutions

No response

Additional Context

No response

How important is this feature to you?

Important