Consider API doc for `.locale(locale)`, which [highlights correctly on GH](https://github.com/yargs/yargs/blob/1ef44e03ef1a2779f92bd979984a6bab3a671ee9/docs/api.md#localelocale):  But [doesn't highlight properly](http://yargs.js.org/docs/#api-localelocale) (`'`s might just be taking precedence, dunno) [on the wubsite](http://yargs.js.org/docs/#api-localelocale): 