Fix cargo clippy issue

rust/sea_battle_cli_player/src/ui_widgets/game_map_widget.rs

@@ -98,7 +98,7 @@ impl<'a> GameMapWidget<'a> {
     }
 }
 
-impl<'a> Widget for GameMapWidget<'a> {
+impl Widget for GameMapWidget<'_> {
     fn render(mut self, area: Rect, buf: &mut Buffer) {
         let alphabet = PlayConfiguration::default().ordinate_alphabet;