fix examples and documentation

examples/fetch_state.rs

@@ -1,15 +1,19 @@
-use mpvipc::{MpvError, Mpv, MpvExt};
+use mpvipc::{Mpv, MpvError, MpvExt};
 
 #[tokio::main]
 async fn main() -> Result<(), MpvError> {
     env_logger::init();
 
     let mpv = Mpv::connect("/tmp/mpv.sock").await?;
+
     let meta = mpv.get_metadata().await?;
     println!("metadata: {:?}", meta);
+
     let playlist = mpv.get_playlist().await?;
     println!("playlist: {:?}", playlist);
+
     let playback_time: f64 = mpv.get_property("playback-time").await?;
     println!("playback-time: {}", playback_time);
+
     Ok(())
 }