fix: correct properties for TaskUpdate (#726)

Co-authored-by: Martin Adámek <banan23@gmail.com>

Author: mvolfik

sources/platform/api_v2/api_v2_reference.apib

@@ -4162,16 +4162,8 @@ a summary of your limits, and your current usage.
     - hello:             `world`                            (string, nullable)
 
 ## TaskUpdate (object)
-- id:                    `ZxLNxrRaZrSjuhT9y`                (string, required)
-- userId:                `BPWZBd7Z9c746JAnF`                (string, required)
-- actId:                 `asADASadYvn4mBZmm`                (string, required)
 - name:                  `my-task`                          (string, required)
-- username:              `janedoe`                          (string, nullable)
-- createdAt:             `2018-10-26T07:23:14.855Z`         (string, required)
-- modifiedAt:            `2018-10-26T13:30:49.578Z`         (string, required)
-- removedAt                                                 (string, nullable)
-- stats                                                     (object, nullable)
-    - totalRuns:         15                                 (number, required)
+- title:                 `My Task`                          (string, nullable)
 - options                                                   (object, nullable)
     - build:             `latest`                           (string, nullable)
     - timeoutSecs:       300                                (number, nullable)