message: fix missing await;
diff: @@ -127,7 +127,9 @@ function downloadVersionJson(version: VersionMeta, minecraft: MinecraftLocation)
  const folder: MinecraftFolder = typeof minecraft === "string" ? new MinecraftFolder(minecraft) : minecraft;
  const json = folder.getVersionJson(version.id);
  await context.execute("ensureVersionRoot", () => fs.ensureDir(folder.getVersionRoot(version.id)));
  - if (!exists(json)) { await context.execute("getJson", downloadTask(version.url, json)); }
  + if (!await exists(json)) {
  + await context.execute("getJson", downloadTask(version.url, json));
  + }
  return Version.parse(minecraft, version.id);
  };
  }
  