GitLab

Improve the readability. "an string" -> "a string", mostly.

Bug: None
Change-Id: I71ef9fa7545e23c977a7b90192161776d69cf527
Reviewed-on: https://chromium-review.googlesource.com/c/1180275Reviewed-by: Mike Pinkerton <pinkerton@chromium.org>
Reviewed-by: Will Harris <wfh@chromium.org>
Reviewed-by: Dan Erat <derat@chromium.org>
Commit-Queue: Peter Mayo <petermayo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#616033}