Error in Readme

[Onè]

Hi the code in the readme is not in sync with the example. It fails to compile. (See line below). I didn't get a chance to try it but cargo-rdme might be able to let you use the same file so you don't need to do extra work to keep them in sync.

egui_file/examples/default.rs

Line 26 in de5f8f4

 self.opened_file = Some(file.to_path_buf());