Sections with parenthesis in headings rendered twice

Describe the bug
When you have some parenthesis in the heading of a description of a tag the whole section gets rendered twice with different font sizes.

Expected behavior
The section should only be rendered once with a consistent font size like the other sections.

Minimal reproducible OpenAPI snippet(if possible)

openapi: 3.1.0

info:
  title: OpenAPI Minimal Example

tags:
  - name: Correct Rendering
    description: |
      # This H1 gets rendered correctly
      Some text.
  - name: Incorrect Rendering
    description: |
      # This H1 gets rendered incorrectly (parentheses cause it to be rendered twice with different font sizes)
      Some other text.

Screenshots

Start with the minimal OpenAPI YAML snippet in the issue and compare rendering of the two tag descriptions, especially the heading containing parentheses. Trace the tag-description rendering entry point and identify why the parenthesized heading appears twice. Done means each section renders once with a consistent font size, matching the heading without parentheses.