Updated API from documentation release

Author: ct-sdks[bot]

api-specs/api/resources/recurring-orders.raml

@@ -77,6 +77,8 @@ post:
     securedBy: [oauth_2_0: { scopes: ['manage_recurring_orders:{projectKey}'] }]
     description: |
       Updates a Recurring Order using one or more [update actions](/../api/projects/recurring-orders#update-actions).
+
+      A Recurring Order can only be updated when it is not processing an Order. Otherwise, an [InvalidOperation](ctp:api:type:InvalidOperationError) error is returned.
     body:
       application/json:
         example: !include ../examples/recurring-order-update.example.json
@@ -124,6 +126,8 @@ post:
     securedBy: [oauth_2_0: { scopes: ['manage_recurring_orders:{projectKey}'] }]
     description: |
       Updates a Recurring Order using one or more [update actions](/../api/projects/recurring-orders#update-actions).
+
+      A Recurring Order can only be updated when it is not processing an Order. Otherwise, an [InvalidOperation](ctp:api:type:InvalidOperationError) error is returned.
     body:
       application/json:
         example: !include ../examples/recurring-order-update.example.json