DEVDOCS-5966: [update] correct contentType

reference/catalog/brands_catalog.v3.yml

@@ -1320,8 +1320,6 @@ paths:
 
         Only one image at a time can be created. To update a brand image, use the [Update a brand](/docs/rest-catalog/brands#update-a-brand) endpoint and an `image_url`.
       operationId: createBrandImage
-      parameters:
-        - $ref: '#/components/parameters/ContentType'
       requestBody:
         content:
           multipart/form-data:

reference/catalog/categories_catalog.v3.yml

@@ -1297,8 +1297,6 @@ paths:
         Limit image size to `8MB`.
         To update a *Category Image*, use the [Update categories](/docs/rest-catalog/category-trees/categories#update-categories) endpoint and an `image_url`.
       operationId: createCategoryImage
-      parameters:
-        - $ref: '#/components/parameters/ContentType'
       requestBody:
         content:
           multipart/form-data:

reference/catalog/product-modifiers_catalog.v3.yml

@@ -1623,8 +1623,6 @@ paths:
          **Required Fields**
         - image_file: Form posts are the only accepted upload option.
       operationId: createProductModifierImage
-      parameters:
-        - $ref: '#/components/parameters/ContentType'
       requestBody:
         content:
           multipart/form-data:

reference/catalog/product-variants_catalog.v3.yml

@@ -886,8 +886,6 @@ paths:
         - image_file: Form posts. Files larger than 1 MB are not accepted
         - image_url: Any publicly available URL
       operationId: createProductVariantImage
-      parameters:
-        - $ref: '#/components/parameters/ContentType'
       requestBody:
         content:
           application/json:

reference/catalog/products_catalog.v3.yml

@@ -1277,13 +1277,11 @@ paths:
 
         **Usage Notes**
         - `image_url` - `255` character limit
-        - For file uploads, use the `multipart/form-data` media type. See [Adding product images](/docs/store-operations/catalog#adding-product-images) for more information.
+        - `Content-Type` - For `image_file`, use the `multipart/form-data` media type. For `image_url`, use the `application/json` type. See [Adding product images](/docs/store-operations/catalog#adding-product-images) for more information.
         - You can create only one image at a time. A product can have up to 1000 images.
         - Supported image file types are BMP, GIF, JPEG, PNG, WBMP, XBM, and WEBP.
         - Each image file or image uploaded by URL can be up to 8 MB.
       operationId: createProductImage
-      parameters:
-        - $ref: '#/components/parameters/ContentType'
       requestBody:
         content:
           application/json: