most detections summary by date (#551)

* added Date with most detections by level #550

* cargo fmt

* updated changelog #550

* updated readme #550

* removed  most undefined detections date in summary #550

* cargo fmt

* add space after level tuning

* changed undefined rule detection count to no show #550

* cargo fmt

* readme update

* channel abb update

* channel abb update

* readme update

Co-authored-by: Tanaka Zakku <71482215+YamatoSecurity@users.noreply.github.com>

src/options/level_tuning.rs

@@ -105,6 +105,7 @@ impl LevelTuning {
                 .ok();
             }
         }
+        println!();
         Result::Ok(())
     }
 }