Update index.html

Author: DeMENIGECO

docs/1.0.x/index.html

@@ -374,14 +374,19 @@ <h1>
 
 });
 
-let file = getQueryElement("file")
+const params = new URLSearchParams(window.location.search);
+let file = params.get("file");
+
+if(file){
 
   fetch(file)
   .then(response => response.text())
   .then(text => {
     document.getElementById("mdc").innerHTML = marked.parse(text);
   });
 
+}
+
 </script>
 
 </body>