Changed variable names

Author: danielduberg

docs/demo.js

@@ -1,13 +1,11 @@
 // import "./style.css";
 import { WebViewer } from "@rerun-io/web-viewer";
 
-const rrd =
-  new URLSearchParams(location.search).get("url") ||
-  "https://app.rerun.io/version/0.22.0/examples/structure_from_motion.rrd";
-const parentElement = document.getElementById("demo");
+const rrd = "https://app.rerun.io/version/0.22.0/examples/structure_from_motion.rrd";
+const parent = document.getElementById("demo");
 
 const viewer = new WebViewer();
-viewer.start(rrd, parentElement, {
+viewer.start(rrd, parent, {
   // width: "100%",
   // height: "100%",
 });