chore(docs): Updated API Reference (v2) (#8929)

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

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

@@ -4,8 +4,15 @@ x-schemaName: AdminCreateTaxRate
 required:
   - name
   - tax_region_id
-  - metadata
 properties:
+  name:
+    type: string
+    title: name
+    description: The tax rate's name.
+  tax_region_id:
+    type: string
+    title: tax_region_id
+    description: The tax rate's tax region id.
   rate:
     type: number
     title: rate
@@ -18,24 +25,7 @@ properties:
     type: array
     description: The tax rate's rules.
     items:
-      type: object
-      description: The rule's rules.
-      required:
-        - reference
-        - reference_id
-      properties:
-        reference:
-          type: string
-          title: reference
-          description: The rule's reference.
-        reference_id:
-          type: string
-          title: reference_id
-          description: The rule's reference id.
-  name:
-    type: string
-    title: name
-    description: The tax rate's name.
+      $ref: ./AdminCreateTaxRateRule.yaml
   is_default:
     type: boolean
     title: is_default
@@ -44,10 +34,6 @@ properties:
     type: boolean
     title: is_combinable
     description: The tax rate's is combinable.
-  tax_region_id:
-    type: string
-    title: tax_region_id
-    description: The tax rate's tax region id.
   metadata:
     type: object
     description: The tax rate's metadata.