Setting the selected package to the install button

Making this change so that we can test the actual deployed NPM package.

packages/site/src/pages/index.tsx

@@ -141,7 +141,7 @@ const Index = () => {
   };
 
   const handleConnectClick = async () => {
-    const defaultSnapOrigin = `local:http://localhost:8080`;
+    const defaultSnapOrigin = `npm:{selectedPackage}`;
 
     try {
       await connectSnap(defaultSnapOrigin);