Display example descriptions

ReDoc supports displaying multiple request/response examples using the examples field. However, the description is not presented anywhere. Currently the only way of explaining the examples is in the main API description.

I propose the description (if present) would be displayed beneath the example selector (for the screenshot I just added one <div> containing the description):

Example OpenAPI file:

openapi: 3.0.0
info:
  title: Test
  version: 1.0.0

paths:
  /rest/stuff:
    post:
      summary: Create stuff
      requestBody:
        content:
          application/json:
            schema:
              type: object
            examples:
              Example one:
                description: This explains what example one does.
                value:
                  example: one
              Example two:
                description: This explains what example two does.
                value:
                  example: two
      responses:
        "200":
          description: stuff is created

Start by reproducing the supplied OpenAPI document and inspecting the request-body example selector and its rendering path. Done means descriptions from the selected example appear beneath the selector, while examples without descriptions continue to render normally.