Clean up special characters in source files

src-tauri/src/lib.rs

@@ -77,7 +77,7 @@ pub fn run() {
 
     tauri::Builder::default()
         .plugin(tauri_plugin_single_instance::init(|app, args, _cwd| {
-            // Second instance launched with a file — send it to the existing window
+            // Second instance launched with a file - send it to the existing window
             if let Some(file_arg) = args.get(1) {
                 if let Some(cli_file) = read_md_file(file_arg) {
                     let _ = app.emit("open-file", cli_file);