Option to ignore elements with specific classes

[pawamoy]

Is your feature request related to a problem? Please describe.
It's possible to show mermaid diagrams using a mermaid class on divs. The issue is that the contents of the div is text and is therefore spell checked, triggering useless errors.

Describe the solution you'd like
An option to ignore specific classes, something like:

ignore_classes:
- mermaid
- nospellcheck

Describe alternatives you've considered
/

Additional context
/

Boost priority

• Boost priority in our backlog through Polar.sh. Higher pledge, higher priority.
• Minimum pledge by user/organization is $5, minimum amount for boost is $30.
• View all issues with pledges.
• We receive the funds once the issue is completed and confirmed by you.
• Features with the insiders label are released to sponsors first, and tied to a funding goal.