message: Add extra \n
diff: @@ -788,7 +788,7 @@ namespace vcpkg
  }
  else
  {
  - auto msg = msg::format(msgCMakeTargetsUsage, msg::package_name = bpgh.spec.name()).append_raw('\n');
  + auto msg = msg::format(msgCMakeTargetsUsage, msg::package_name = bpgh.spec.name()).append_raw("\n\n");
  msg.append_indent().append(msgCMakeTargetsUsageHeuristicMessage).append_raw('\n');
  for (auto&& library_target_pair : library_targets)
  