chore(docs): Generated API Reference (#4706)

Co-authored-by: olivermrbl <olivermrbl@users.noreply.github.com>
Co-authored-by: Shahed Nasser <shahednasser@gmail.com>

docs/api/admin/components/schemas/ShippingMethodTaxLine.yaml

@@ -1,5 +1,7 @@
 title: Shipping Method Tax Line
-description: Shipping Method Tax Line
+description: >-
+  A Shipping Method Tax Line represents the taxes applied on a shipping method
+  in a cart.
 type: object
 required:
   - code
@@ -33,7 +35,8 @@ properties:
     type: string
     example: sm_01F0YET7DR2E7CYVSDHM593QG2
   shipping_method:
-    description: Available if the relation `shipping_method` is expanded.
+    description: The details of the associated shipping method.
+    x-expandable: shipping_method
     nullable: true
     type: object
   created_at:
@@ -50,3 +53,7 @@ properties:
     type: object
     example:
       car: white
+    externalDocs:
+      description: Learn about the metadata attribute, and how to delete and update it.
+      url: >-
+        https://docs.medusajs.com/development/entities/overview#metadata-attribute