update file path

public/udigit4icity/index.html

@@ -529,7 +529,7 @@ function closeDatastream() {
 
    document.getElementById("toggleSpaceTime").addEventListener("click", function () {
     // URL for the space-time visualization page
-    var spaceTimeURL = "/STC.html";
+    var spaceTimeURL = "./STC.html";
 
     // Open the space-time visualization page in a new window
     window.open(spaceTimeURL, "_blank");