Add documentation for query param

raml/resources/upload-by-uid.raml

@@ -4,6 +4,11 @@ post:
     Same behavior as /api/upload/label,
      except the metadata field must be uid format
      See api/schemas/input/uidupload.json for the fromat of this metadata.
+  queryParameters:
+    update-only:
+      type: boolean
+      required: false
+      description: If true, it will only upload to containers that already exist
   body:
     multipart/form-data:
   responses:
@@ -13,3 +18,5 @@ post:
           example: !include ../examples/file_info_list.json
     402:
       description: Uploads must be from an authorized drone
+    404:
+      description: Session or Acquisition with uid does not exist