Clean up some typos in GN quick start page.

Also adjust the sample code a bit.

BUG=none

Review URL: https://codereview.chromium.org/1259763004

Cr-Original-Commit-Position: refs/heads/master@{#341213}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 19c81c689ac484b960dcbfb8633e1723245e5810
2 files changed
tree: 8643dce97ec1f21f02ab44ace4a25dc542f47147
  1. tools/