Update modules/filters.html

Co-authored-by: Jean-Yves Perrier <jypenator@gmail.com>

Author: estelle

modules/filters.html

@@ -93,7 +93,7 @@
     <script>
       const image = document.querySelector("img");
       const controls = document.querySelectorAll("input");
-      let resetValues = new Array();
+      const resetValues = new Array();
 
       for (control of controls) {
         resetValues.push(control.value);