fix twbs#12494 in the migration docs

docs/migration.html

@@ -427,7 +427,7 @@ <h2 id="notes">Additional notes</h2>
     <li>The icons, now <code>.glyphicon</code>, are now font based. Icons also require a base and icon class (e.g. <code>.glyphicon .glyphicon-asterisk</code>).</li>
     <li>Typeahead has been dropped, in favor of using <a href="http://twitter.github.io/typeahead.js/">Twitter Typeahead</a>.</li>
     <li>Modal markup has changed significantly. The <code>.modal-header</code>, <code>.modal-body</code>, and <code>.modal-footer</code> sections are now wrapped in <code>.modal-content</code> and <code>.modal-dialog</code> for better mobile styling and behavior. Also, you should no longer apply <code>.hide</code> to <code>.modal</code> in your markup.</li>
-    <li>The HTML loaded by the <code>remote</code> modal option is now injected into the <code>.modal</code> instead of into the <code>.modal-body</code>. This allows you to also easily vary the header and footer of the modal, not just the modal body.</li>
+    <li>As of v3.1.0, the HTML loaded by the <code>remote</code> modal option is now injected into the <code>.modal-content</code> (from v3.0.0 to v3.0.3, into the <code>.modal</code>) instead of into the <code>.modal-body</code>. This allows you to also easily vary the header and footer of the modal, not just the modal body.</li>
     <li>JavaScript events are namespaced. For example, to handle the modal "show" event, use <code>'show.bs.modal'</code>. For tabs "shown" use <code>'shown.bs.tab'</code>, etc.</li>
   </ul>
   <p>For more information on upgrading to v3.0, and code snippets from the community, see <a href="http://bootply.com/">Bootply</a>.</p>