[Docs] Add link and remove redundant doc line

[amomchilov]

Pulled this unrelated change out of #197

cc @stephentyrone

Checklist

• I've added at least one test that validates that my change is working, if appropriate
• I've followed the code style of the rest of the project
• I've read the Contribution Guidelines
• I've updated the documentation if necessary

[stephentyrone]

@swift-ci test

[amomchilov]

@stephentyrone perhaps a silly question, but I'm curious: do doc changes like this need to be tested? Does CI validate anything about them?

[stephentyrone]

It validates that the reviewer didn't somehow miss a change that did effect the code =)