TASK: point out the relevance of this package

Author: PRGfx

README.md

@@ -1,6 +1,6 @@
 # Prgfx.Neos.TextPartLanguage
 
-This package allows editors to tag selected text with a language, helping assistive technology with pronunciation.
+This package allows editors to tag selected text with a language, helping assistive technology with pronunciation, implementing the [WCAG 3.1.2 Language of Parts](https://www.w3.org/TR/UNDERSTANDING-WCAG20/meaning-other-lang-id.html) specification.
 
 ```
 composer require prgfx/neos-textpartlanguage