Added docs

Frontend/assets/scripts/tools/highlight.js

@@ -2,6 +2,16 @@
  * This file contains scripts needed for syntax highlight to work.
  */
 
+
+/**
+ * This functions highlight element with provided ID.
+ * 
+ * @function
+ * @name highlightSyntax
+ * @kind function
+ * @param {any} elementId
+ * @returns {void}
+ */
 function highlightSyntax(elementId) {
     const element = document.getElementById(elementId);
     element.innerHTML = hljs.highlightAuto(element.innerText).value