fix: add semi colon and clean up whitespace

src/main.rs

@@ -431,7 +431,7 @@ impl AudioVisualizer {
 
 impl Drop for AudioVisualizer {
   fn drop(&mut self) {
-    self.stop_flag.store(true, Ordering::Relaxed)
+    self.stop_flag.store(true, Ordering::Relaxed);
   }
 }
 
@@ -833,7 +833,7 @@ mod tests {
     assert!(result.enable_notifications);
   }
 
-    #[test]
+  #[test]
   fn termato_visualizer_when_called_it_should_verify_opt_in_behavior() {
     let result = Termato::new(25, 5);
     assert!(!result.enable_visualizer);