chore(docs): Updated API Reference (v2)

www/apps/api-reference/specs/admin/code_samples/Shell/admin_orders_{id}_fulfillments_{fulfillment_id}_mark-as-delivered/post.sh

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+curl -X POST '{backend_url}/admin/orders/{id}/fulfillments/{fulfillment_id}/mark-as-delivered' \
+-H 'Authorization: Bearer {access_token}'

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

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+type: object
+description: The promotion's application method.
+x-schemaName: AdminApplicationMethod
+required:
+  - id
+properties:
+  promotion:
+    type: object
+    description: The application method's promotion.
+    x-schemaName: AdminPromotion
+    required:
+      - id
+    properties:
+      application_method:
+        type: object
+        description: The promotion's application method.
+        x-schemaName: AdminApplicationMethod
+      rules:
+        type: array
+        description: The promotion's rules.
+        items:
+          type: object
+          description: The rule's rules.
+          x-schemaName: AdminPromotionRule
+      id:
+        type: string
+        title: id
+        description: The promotion's ID.
+      code:
+        type: string
+        title: code
+        description: The promotion's code.
+      type:
+        oneOf:
+          - type: string
+            title: type
+            description: The promotion's type.
+          - type: string
+            title: type
+            description: The promotion's type.
+      is_automatic:
+        type: boolean
+        title: is_automatic
+        description: The promotion's is automatic.
+      campaign_id:
+        type: string
+        title: campaign_id
+        description: The promotion's campaign id.
+      campaign:
+        type: object
+        description: The promotion's campaign.
+        x-schemaName: AdminCampaign
+  target_rules:
+    type: array
+    description: The application method's target rules.
+    items:
+      $ref: ./AdminPromotionRule.yaml
+  buy_rules:
+    type: array
+    description: The application method's buy rules.
+    items:
+      $ref: ./AdminPromotionRule.yaml
+  id:
+    type: string
+    title: id
+    description: The application method's ID.
+  type:
+    oneOf:
+      - type: string
+        title: type
+        description: The application method's type.
+      - type: string
+        title: type
+        description: The application method's type.
+  target_type:
+    oneOf:
+      - type: string
+        title: target_type
+        description: The application method's target type.
+      - type: string
+        title: target_type
+        description: The application method's target type.
+      - type: string
+        title: target_type
+        description: The application method's target type.
+  allocation:
+    oneOf:
+      - type: string
+        title: allocation
+        description: The application method's allocation.
+      - type: string
+        title: allocation
+        description: The application method's allocation.
+  value:
+    type: number
+    title: value
+    description: The application method's value.
+  currency_code:
+    type: string
+    title: currency_code
+    description: The application method's currency code.
+  max_quantity:
+    type: number
+    title: max_quantity
+    description: The application method's max quantity.
+  buy_rules_min_quantity:
+    type: number
+    title: buy_rules_min_quantity
+    description: The application method's buy rules min quantity.
+  apply_to_quantity:
+    type: number
+    title: apply_to_quantity
+    description: The application method's apply to quantity.