Fix typo in GN get_label_info help

BUG=None

Review URL: https://codereview.chromium.org/1459733004

Cr-Original-Commit-Position: refs/heads/master@{#360924}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: de3c7279759c9bf318961371c5454eeecac508a3
1 file changed
tree: e2d28ce512c094f3ab5dfb6207290a4278218a4b
  1. tools/