Update managing-your-theme-settings.md (#22667)

Author: gaknoll

content/account-and-profile/setting-up-and-managing-your-github-user-account/managing-user-account-settings/managing-your-theme-settings.md

@@ -22,7 +22,7 @@ You may want to use a dark theme to reduce power consumption on certain devices,
 
 {% note %}
 
-**Note:** The colorblind themes are currently in public beta. For more information on enabling features in public beta, see "[Exploring early access releases with feature preview](/get-started/using-github/exploring-early-access-releases-with-feature-preview)."
+**Note:** The colorblind themes and light high contrast theme are currently in public beta. For more information on enabling features in public beta, see "[Exploring early access releases with feature preview](/get-started/using-github/exploring-early-access-releases-with-feature-preview)."
 
 {% endnote %}