Documentation update

[marleydepew]

Board/Shield Check-list

• This board/shield is tested working on real hardware
• Definitions follow the general style of other shields/boards upstream (Reference)
• .zmk.yml metadata file added
• Proper Copyright + License headers added to applicable files (Generally, we stick to "The ZMK Contributors" for copyrights to help avoid churn when files get edited)
• General consistent formatting of DeviceTree files
• Keymaps do not use deprecated key defines (Check using the upgrader tool)
• &pro_micro used in favor of &pro_micro_d/a if applicable
• If split, no name added for the right/peripheral half
• Kconfig.defconfig file correctly wraps all configuration in conditional on the shield symbol
• .conf file has optional extra features commented out
• Keyboard/PCB is part of a shipped group buy or is generally available in stock to purchase (OSH/personal projects without general availability should create a zmk-config repo instead)

[marleydepew]

Hello @nickconway This is my first time contributing to an open source project. I wanted to add a few fixes to the Leader key documentation. I didn't mess with anything more technical than that. I'm not sure if I'm required to do further testing or complete the checklist before opening the pull request?

[nickconway]

@marleydepew thanks for the contribution, and welcome to open source!

Since it's just docs I'll merge it in even though it isn't passing the tests, I've been needing to get this and all my other PRs up to date with the current version of ZMK anyway so thanks for the reminder, and if you've been using the leader key at all I hope it's made your keyboard usage better :)