chore: clarify javascript usage

Author: wispl

templates/about.html

@@ -91,7 +91,7 @@ <h4 class="header no_margin">System Info</h4>
       </div>
       <div class="surface-text surface-text-padvert">
 	The source of the website can found <a href="https://github.com/wispl/wispl.github.io">here</a>.
-	Javascript and localStorage is used only to save the color-scheme preference.
+	LocalStorage is used only to save the color-scheme preference. Javascript is used for the dark mode toggle as well as for populating the backlinks buffer using D3-force.
       </div>
     </div>
 {% endblock entry %}