update_chroot: rename to push people to use chromite version

This is available via $PATH now, so push people to use that.

BUG=b:298249751
TEST=CQ passes

Cq-Depend: chromium:4831961
Change-Id: I88cb8ef17c0a16adf86d482fca4f991ccd177742
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/4835117
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Anuj Jamwal <anujjamwal@google.com>
Tested-by: Mike Frysinger <vapier@chromium.org>
2 files changed