Fixed typo.

tarteaucitron.js

@@ -1596,7 +1596,7 @@ var tarteaucitron = {
             tarteaucitron.makeAsync.antiGhost += 1;
             tarteaucitron.addInternalScript(url, '', function () {
                 if (document.getElementById(id) !== null) {
-                    document.getElementById(id).innerHTML += "<span classe='display-none'>&nbsp;</span>" + tarteaucitron.makeAsync.buffer;
+                    document.getElementById(id).innerHTML += "<span class='display-none'>&nbsp;</span>" + tarteaucitron.makeAsync.buffer;
                     tarteaucitron.makeAsync.buffer = '';
                     tarteaucitron.makeAsync.execJS(id);
                 }