Try to optimize

src/input.rs

@@ -476,7 +476,7 @@ fn handle_modal_input(ctx: &mut InputContext, key: KeyEvent) -> InputResult {
                 KeyCode::Char('p') if ctrl => {
                     editor.search_prev();
                 }
-                KeyCode::Char('k') if ctrl => {
+                KeyCode::Char('s') if ctrl => {
                     ctx.app.editor_ctx.show_stack = !ctx.app.editor_ctx.show_stack;
                 }
                 KeyCode::Char('a') if ctrl => {