Add link to GitHub Accessibility Documentation (#54673)

Co-authored-by: Sam Browning <106113886+sabrowning1@users.noreply.github.com>

Author: ethanpalm

content/account-and-profile/setting-up-and-managing-your-personal-account-on-github/managing-user-account-settings/managing-accessibility-settings.md

@@ -18,6 +18,8 @@ To create an experience on {% data variables.product.github %} that fits your ne
 
 You can decide whether you want to use some or all keyboard shortcuts, and control the display of animated images and how links are displayed.
 
+This article will help you customize your experience on the {% data variables.product.github %} website as a whole. For information on using specific {% data variables.product.github %} products with screen readers and other assistive technologies, see the [{% data variables.product.github %} Accessibility Documentation](https://accessibility.github.com/documentation).
+
 ## Managing the appearance of links
 
 You can control whether links in text blocks are underlined and therefore more distinguishable.