Fix HTML code block for support notes section

Author: thiagogq

sources.html

@@ -64,7 +64,7 @@
         <details class="extrainfo">
         <summary>Support notes</summary>
         <div class="infocontent">
-        <code>On this page, you can import and delete references. Please note that it is not possible to edit the content of imported references. There are several reference management softwares that are very useful for this task (<a href="https://www.zotero.org/" target="_blank">Zotero</a>, <a href="https://www.jabref.org/" target="_blank">JabRef</a>, etc.). <br/><br/> You can import the same references several times and they will not be inserted twice (as long as they have the same ID or the same type, title, author and year of publication).<br/><br/> <i>P.S. 1</i>: <b>RIS</b> is one of the file formats most commonly used by citation managers&#010;such as Mendeley and Zotero to export and import references.<br/><br/> <i>P.S. 2</i>: The <i>"Enable Twig inside articles?"</i> checkbox must be active in <a href="/settings.html#twig-inside-articles">Settings</a> for you to be able to insert references into articles.
+        <code>On this page, you can import and delete references. Please note that it is not possible to edit the content of imported references. There are several reference management softwares that are very useful for this task (<a href="https://www.zotero.org/" target="_blank">Zotero</a>, <a href="https://www.jabref.org/" target="_blank">JabRef</a>, etc.). <br/><br/> You can import the same references several times and they will not be inserted twice (as long as they have the same ID or the same type, title, author and year of publication).<br/><br/> <i>P.S. 1</i>: <b>RIS</b> is one of the file formats most commonly used by citation managers&#010;such as Mendeley and Zotero to export and import references.<br/><br/> <i>P.S. 2</i>: The <i>"Enable Twig inside articles?"</i> checkbox must be active in <a href="settings.html#twig-inside-articles">Settings</a> for you to be able to insert references into articles.
         </code></div>
       </details>
       </div>