fix examples to invert ratatui and tui-rs

examples/termion.rs

@@ -1,3 +1,6 @@
+use ratatui::backend::TermionBackend;
+use ratatui::widgets::{Block, Borders};
+use ratatui::Terminal;
 use std::error::Error;
 use std::io;
 use std::sync::mpsc;
@@ -7,9 +10,6 @@ use termion::event::Event as TermEvent;
 use termion::input::{MouseTerminal, TermRead};
 use termion::raw::IntoRawMode;
 use termion::screen::IntoAlternateScreen;
-use tui::backend::TermionBackend;
-use tui::widgets::{Block, Borders};
-use tui::Terminal;
 use tui_textarea::{Input, Key, TextArea};
 
 enum Event {