update_engine: Change general maintaines to Android ones

Sometimes Chromium OS people add one of the "general maintaines" as
reviewers instead of Chromium OS reviewers, this patch changes "general"
to "Anrdoid et. al." so people don't keep adding Android people on
Chromium OS patches.

BUG=none
TEST=none

Change-Id: I8826312a34f6247b2e24c51b776992a021914061
Reviewed-on: https://chromium-review.googlesource.com/c/aosp/platform/system/update_engine/+/1801062
Reviewed-by: Nicolas Norvez <norvez@chromium.org>
Reviewed-by: Sen Jiang <senj@chromium.org>
Commit-Queue: Amin Hassani <ahassani@chromium.org>
Tested-by: Amin Hassani <ahassani@chromium.org>
diff --git a/OWNERS b/OWNERS
index 4e47605..aa858bb 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,6 +1,6 @@
 set noparent
 
-# Current general maintainers:
+# Android et. al. maintainers:
 deymo@google.com
 senj@google.com