[docs][match] fix typos, improve wording, incorporate improvements to match documentation examples

[rogerluan]

Checklist

• I've run bundle exec rspec from the root directory to see all new and existing tests pass
• I've followed the fastlane code style and run bundle exec rubocop -a to ensure the code style is valid
• I see several green ci/circleci builds in the "All checks have passed" section of my PR (connect CircleCI to GitHub if not)

Motivation and Context

Incorporate the changes made to fastlane/docs#1196, which were applied to a file in the /generated/ dir and I didn't notice.

cc @tylermilner 😊

Description

Just simple docs improvements.

Testing Steps

N/A