Update changelog

Author: bradlc

CHANGELOG.md

@@ -17,6 +17,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Allow `lead` class to override element styles ([#260](https://github.com/tailwindlabs/tailwindcss-typography/pull/260))
 - Fix generation of `prose-headings` variant ([#264](https://github.com/tailwindlabs/tailwindcss-typography/pull/264))
 - Fix `figure` spacing ([#267](https://github.com/tailwindlabs/tailwindcss-typography/pull/267))
+- Fix child combinator `:where` selectors ([#268](https://github.com/tailwindlabs/tailwindcss-typography/pull/267))
 
 ## [0.5.2] - 2022-02-14