fix: correct spec paths for parameters, responses and request bodies

[glowcloud]

This PR corrects spec paths to schemas in parameters with content, responses and request bodies.

Parameters

parameters:
  - in: query
    name: testestest
    content:
      application/json:
        schema:
          $ref: '#/components/schemas/Pet'

Path to schema before: [..., parameters, 0, schema]
Path to schema after: [..., parameters, 0, content, application/json, schema]

Responses

paths:
  /pet:
    get:
      responses:
        '200':
          description: Successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Pet'

Path to schema before: [content, application/json, schema]
Path to schema after: [paths, /pet, get, responses, 200, content, application/json, schema]

Request bodies

requestBody:
  content:
    application/json:
      schema:
        $ref: '#/components/schemas/Pet'

Path to schema before: [..., content, application/json]
Path to schema after: [..., content, application/json, schema]