fixed use statement formatting

src/main.rs

@@ -16,10 +16,15 @@
  * along with this program. If not, see https://www.gnu.org/licenses/.
  */
 
-use std::io::{stdin, stdout, Read, Stdout, Write};
+use std::io::{ stdin, stdout, Read, Stdout, Write };
 
-use crossterm::{cursor, event, terminal, ExecutableCommand, Result};
-use event::{Event, KeyCode, KeyEvent};
+use crossterm::{
+    cursor,
+    event::{Event, KeyCode, KeyEvent}
+    terminal,
+    ExecutableCommand,
+    Result
+};
 use ropey::Rope;
 
 struct Buffer {