[Schema Inaccuracy] confusing installation account type

[yanyongyu]

Schema Inaccuracy

Current 3.1 description installation account schema uses both type and anyof. Should this uses anyof only? (like what 3.0 do)

installation:
  title: Installation
  description: Installation
  type: object
  properties:
    account:
      anyOf:
      - "$ref": "#/components/schemas/simple-user"
      - "$ref": "#/components/schemas/enterprise"
      type:
      - 'null'
      - object

Expected

installation:
  title: Installation
  description: Installation
  type: object
  properties:
    account:
      anyOf:
      - "$ref": "#/components/schemas/simple-user"
      - "$ref": "#/components/schemas/enterprise"
      - type: 'null'

[yanyongyu]

I found another similar issue in api description.

In /repos/{owner}/{repo}/issues post body (operationId: issues/create):

requestBody:
  required: true
  content:
    application/json:
      schema:
        type: object
        properties:
          milestone:
            oneOf:
            - type: string
            - type: integer
              description: 'The `number` of the milestone to associate this
                issue with. _NOTE: Only users with push access can set the milestone
                for new issues. The milestone is silently dropped otherwise._'
            type:
            - 'null'
            - string
            - integer