Fix the wrong reference of OWNER file

- update-notification-scheduling-integration references to an incorrect
 OWNERS file.

Bug: 1048360
Change-Id: Ifac09c577afc4ca62d19557e3a6f935f829bc530
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2036446
Auto-Submit: Hesen Zhang <hesen@chromium.org>
Reviewed-by: Hesen Zhang <hesen@chromium.org>
Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#738169}

chrome/browser/flag-metadata.json

@@ -3612,7 +3612,7 @@
   },
   {
     "name": "update-notification-scheduling-integration",
-    "owners": [ "//chrome/android/java/src/org/chromium/chrome/browser/updates/OWNERS" ],
+    "owners": [ "//chrome/browser/updates/OWNERS" ],
     "expiry_milestone": 86
   },
   {