message: `export`: Fix output dir
diff: @@ -125,7 +125,7 @@ namespace vcpkg::Commands::Export
  const BinaryParagraph& binary_paragraph = action.any_paragraph.binary_paragraph.value_or_exit(VCPKG_LINE_INFO);
  const InstallDir dirs = InstallDir::from_destination_root(
  - output,
  + output / "installed",
  action.spec.triplet().to_string(),
  output / "installed" / "vcpkg" / "info" / (binary_paragraph.fullstem() + ".list"));
  