chore(docs): Updated API Reference (automated) (#10047)

Automated changes by [create-pull-request](https://github.com/peter-evans/create-pull-request) GitHub action

Co-authored-by: Oli Juhl <59018053+olivermrbl@users.noreply.github.com>
Co-authored-by: Shahed Nasser <27354907+shahednasser@users.noreply.github.com>

www/apps/api-reference/specs/admin/components/schemas/AdminBatchProductVariantRequest.yaml

@@ -11,7 +11,7 @@ properties:
     type: array
     description: The product variants to update.
     items:
-      $ref: ./AdminUpdateProductVariant.yaml
+      $ref: ./AdminBatchUpdateProductVariant.yaml
   delete:
     type: array
     description: The product variants to delete.

www/apps/api-reference/specs/admin/components/schemas/AdminBatchUpdateProductVariant.yaml

@@ -0,0 +1,87 @@
+type: object
+description: The properties to update of a product variant.
+x-schemaName: AdminBatchUpdateProductVariant
+properties:
+  title:
+    type: string
+    title: title
+    description: The product variant's title.
+  sku:
+    type: string
+    title: sku
+    description: The product variant's SKU.
+  ean:
+    type: string
+    title: ean
+    description: The product variant's EAN.
+  upc:
+    type: string
+    title: upc
+    description: The product variant's UPC.
+  barcode:
+    type: string
+    title: barcode
+    description: The product variant's barcode.
+  hs_code:
+    type: string
+    title: hs_code
+    description: The product variant's HS code.
+  mid_code:
+    type: string
+    title: mid_code
+    description: The product variant's MID code.
+  allow_backorder:
+    type: boolean
+    title: allow_backorder
+    description: Whether customers can order the variant even if it's not in stock.
+  manage_inventory:
+    type: boolean
+    title: manage_inventory
+    description: >-
+      Whether the Medusa application manages the variant's inventory. If
+      disabled, the product variant is always considered in stock.
+  variant_rank:
+    type: number
+    title: variant_rank
+    description: The product variant's rank among its siblings.
+  weight:
+    type: number
+    title: weight
+    description: The product variant's weight.
+  length:
+    type: number
+    title: length
+    description: The product variant's length.
+  height:
+    type: number
+    title: height
+    description: The product variant's height.
+  width:
+    type: number
+    title: width
+    description: The product variant's width.
+  origin_country:
+    type: string
+    title: origin_country
+    description: The product variant's origin country.
+  material:
+    type: string
+    title: material
+    description: The product variant's material.
+  metadata:
+    type: object
+    description: The product variant's metadata, can hold custom key-value pairs.
+  prices:
+    type: array
+    description: The product variant's prices.
+    items:
+      $ref: ./AdminCreateProductVariantPrice.yaml
+  options:
+    type: object
+    description: The product variant's options.
+  id:
+    type: string
+    title: id
+    description: The update's ID.
+required:
+  - id