Merge branch 'docs/build-to-job-webhooks' into 'master'

Rename build to job in webhooks docs

Closes #42254 and #28226

See merge request gitlab-org/gitlab-ce!26676

doc/user/project/integrations/webhooks.md

@@ -48,7 +48,7 @@ Navigate to the webhooks page by going to your project's
 ## Use-cases
 
 - You can set up a webhook in GitLab to send a notification to
-  [Slack](https://api.slack.com/incoming-webhooks) every time a build fails, for example
+  [Slack](https://api.slack.com/incoming-webhooks) every time a job fails.
 - You can [integrate with Twilio to be notified via SMS](https://www.datadoghq.com/blog/send-alerts-sms-customizable-webhooks-twilio/)
   every time an issue is created for a specific project or group within GitLab
 - You can use them to [automatically assign labels to merge requests](https://about.gitlab.com/2016/08/19/applying-gitlab-labels-automatically/).
@@ -1004,7 +1004,7 @@ X-Gitlab-Event: Pipeline Hook
          "email": "user@gitlab.com"
       }
    },
-   "builds":[
+   "jobs":[
       {
          "id": 380,
          "stage": "deploy",
@@ -1129,34 +1129,34 @@ X-Gitlab-Event: Pipeline Hook
 }
 ```
 
-### Build events
+### Job events
 
-Triggered on status change of a Build.
+Triggered on status change of a job.
 
 **Request Header**:
 
 ```
-X-Gitlab-Event: Build Hook
+X-Gitlab-Event: Job Hook
 ```
 
 **Request Body**:
 
 ```json
 {
-  "object_kind": "build",
+  "object_kind": "job",
   "ref": "gitlab-script-trigger",
   "tag": false,
   "before_sha": "2293ada6b400935a1378653304eaf6221e0fdb8f",
   "sha": "2293ada6b400935a1378653304eaf6221e0fdb8f",
-  "build_id": 1977,
-  "build_name": "test",
-  "build_stage": "test",
-  "build_status": "created",
-  "build_started_at": null,
-  "build_finished_at": null,
-  "build_duration": null,
-  "build_allow_failure": false,
-  "build_failure_reason": "script_failure",
+  "job_id": 1977,
+  "job_name": "test",
+  "job_stage": "test",
+  "job_status": "created",
+  "job_started_at": null,
+  "job_finished_at": null,
+  "job_duration": null,
+  "job_allow_failure": false,
+  "job_failure_reason": "script_failure",
   "project_id": 380,
   "project_name": "gitlab-org/gitlab-test",
   "user": {