Documentation Link

https://matplotlib.org/devdocs/gallery/ticks/tick-locators.html

Problem

As demonstrated by @ksunden in today's new contributor meeting, there's no explicit link from the locator example to the locator api, it's just implicit in the intersphinx.

Suggested improvement

Add cross links as references in an admonition, like the tick-formatter example but fewer/more targeted references (locator only as a first pass?)