Endpoint titles should be h3 instead of h2

Describe the bug Not really a bug, more a improper use of the title hierarchy.

We have a unique h1 title, which is good. When we have tags, we have h2 titles for the tags, which is good as they are the second level of hierarchy of the page.

But then the titles of each endpoint is h2 again.

Expected behavior When there is tags, the titles of the endpoints should be h3, in order to properly convey that the endpoint is nested inside the tag's section.

Minimal reproducible OpenAPI snippet(if possible) It is visible on https://redocly.github.io/redoc/, see the screenshot below.

Screenshots

Additional context It would also help accessibility to have this proper title hierarchy.