minor fix in baseUrl usage

public/js/functions.js

@@ -8,7 +8,7 @@
 /* global mapboxgl, turf */
 
 const baseUrl = new URL(window.location.href).origin; // returns "http://localhost:8092"
-// use `${baseUrl}something`
+// use `${baseUrl}/something`
 
 let cdmx, estaciones, ozono, fechas,
     slider = document.getElementById("slider"),