Links to apple and Microsoft never last very long -

[HeilTec]

• What operating system are you using? N/A (irrelevant)
• What version of Node.js is on your system? N/A (irrelevant)

Of the 3 links to documents of OS keyboard, only Linux is still viable

<a class="u-exlink" href="https://developer.apple.com/library/mac/documentation/UserExperience/Conceptual/OSXHIGuidelines/Keyboard.html">macOS</a>

<a class="u-exlink" href="http://windows.microsoft.com/en-us/windows-10/keyboard-shortcuts">Windows</a>

<a class="u-exlink" href="https://developer.gnome.org/hig/stable/keyboard-input.html.en">Linux</a>

At current time Microsoft still redirect to the relevant article found at: Keyboard shortcuts in Windows
(https://support.microsoft.com/en-us/help/12445/windows-keyboard-shortcuts)

Apple on the other hand lands you at https://developer.apple.com/macos/human-interface-guidelines/overview/themes/ which is close but no cigar.
The needed info is but one click away at Input and Output
(https://developer.apple.com/macos/human-interface-guidelines/input-and-output/keyboard/)

A suggestion is to add the actual headlines of the articles. This will let users confirm easily if the link worked, and aid finding the docs when links grow stale.

[codebytere]

Will be fixed by #344