Documentation: Update changelog

Author: ywarnier

documentation/changelog.html

@@ -112,7 +112,7 @@ <h1>Chamilo&nbsp;Changelog</h1>
 
     <div class="version" aria-label="1.11.26">
         <a id="1.11.26"></a>
-        <h1>Chamilo 1.11.26 - Florenville, 26/09/2023</h1>
+        <h1>Chamilo 1.11.26 - Florenville, 27/09/2023</h1>
         <h3>Release notes - summary</h3>
         <p>Chamilo 1.11.26 is a security fix release on top of 1.11.24.</p>
         <h3>Release name</h3>