Update src/addons/addons/save-to-google/userscript.js

src/addons/addons/save-to-google/userscript.js

@@ -67,7 +67,7 @@ export default async ({ addon, console, msg }) => {
       const filename = window.vm.runtime.projectName || "scratch-project";
       
       const metadata = {
-        name: `${filename}.sb3`,
+        name: `${filename}.sb3.txt`,
         mimeType: "application/x-scratch",
       };