chore(oas): explicitly declare type:object on schemas with properties (#2712)

### What

OAS: Explicitly declare type:object on schemas with properties.

### Why

While not officially required, schemas with properties should have their type explicitly declared as "object". Omitting the type translates to type: any with properties XYZ. The ambiguity can lead to issues when using code generators.

### How

Multiple regex searches to identify schemas missing type: object. Manually edit each schema. Spot check generated OAS.

### Testing
- Ran OAS validator.
- Ran docs build script

### Proof
![Screen Shot 2022-12-01 at 1 46 13 PM](https://user-images.githubusercontent.com/116003638/205137671-7a6770dd-4f9b-456c-99a6-ac654f6d0f59.png)


RESOLVES CORE-847

packages/medusa/src/api/routes/admin/notes/create-note.ts

@@ -14,6 +14,7 @@ import { EntityManager } from "typeorm"
  *  content:
  *    application/json:
  *      schema:
+ *        type: object
  *        required:
  *          - resource_id
  *          - resource_type
@@ -65,6 +66,7 @@ import { EntityManager } from "typeorm"
  *     content:
  *       application/json:
  *         schema:
+ *           type: object
  *           properties:
  *             note:
  *               $ref: "#/components/schemas/note"