message: fix : file extension to have bg
diff: @@ -55,7 +55,7 @@ impl CargoManifest {
  fn into_npm(self) -> NpmPackage {
  let filename = self.package.name.replace("-", "_");
  let js_file = format!("{}.js", filename);
  - let wasm_file = format!("{}_wasm.wasm", filename);
  + let wasm_file = format!("{}_bg.wasm", filename);
  NpmPackage {
  name: self.package.name,
  description: self.package.description,
  