Update docs for webhook of push events

Code change: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/25224Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>

doc/user/project/integrations/webhooks.md

@@ -174,7 +174,8 @@ X-Gitlab-Event: Push Hook
   "commits": [
     {
       "id": "b6568db1bc1dcd7f8b4d5a946b0b91f9dacd7327",
-      "message": "Update Catalan translation to e38cb41.",
+      "message": "Update Catalan translation to e38cb41.\n\nSee https://gitlab.com/gitlab-org/gitlab for more information",
+      "title": "Update Catalan translation to e38cb41.",
       "timestamp": "2011-12-12T14:27:31+02:00",
       "url": "http://example.com/mike/diaspora/commit/b6568db1bc1dcd7f8b4d5a946b0b91f9dacd7327",
       "author": {
@@ -188,6 +189,7 @@ X-Gitlab-Event: Push Hook
     {
       "id": "da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
       "message": "fixed readme",
+      "title": "fixed readme",
       "timestamp": "2012-01-03T23:36:29+02:00",
       "url": "http://example.com/mike/diaspora/commit/da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
       "author": {