[docs] update API docs

Author: capcom6

pkg/swagger/docs/swagger.json

@@ -1587,6 +1587,12 @@
                 "url"
             ],
             "properties": {
+                "deviceId": {
+                    "description": "The unique identifier of the device the webhook is associated with.",
+                    "type": "string",
+                    "maxLength": 21,
+                    "example": "PyDmBQZZXYmyxMwED8Fzy"
+                },
                 "event": {
                     "description": "The type of event the webhook is triggered for.",
                     "allOf": [

pkg/swagger/docs/swagger.yaml

@@ -472,6 +472,12 @@ definitions:
     type: object
   smsgateway.Webhook:
     properties:
+      deviceId:
+        description: The unique identifier of the device the webhook is associated
+          with.
+        example: PyDmBQZZXYmyxMwED8Fzy
+        maxLength: 21
+        type: string
       event:
         allOf:
         - $ref: '#/definitions/smsgateway.WebhookEvent'