Added note about why to use type="button”

Author: ericwbailey

partials/section.forms.hbs

@@ -421,6 +421,9 @@
 
             <h4>Notes:</h4>
             <ul>
+                <li>
+                    <small>Add <code>type="button"</code> to <code>button</code> elements placed outside of forms to prevent some browsers from attempting to submit form data.</small>
+                </li>
                 <li>
                     <small>Add <code>pointer-events: none;</code> to <a rel="external noopener" href="https://twitter.com/stowball/status/857707052545613824">inline SVG icons placed in buttons</a>.</small>
                 </li>