logger use milliseconds instead of seconds for reporting elapsed time (#6487)

* logger use milliseconds instead of seconds for reporting elapsed time (#5400)

* Update authors (#5400)

* Remove unnecessary comment

AUTHORS

@@ -6,3 +6,4 @@
 Google Inc.
 Jim Simon <jim.j.simon@gmail.com>
 Lex Berezhny <lex@damoti.com>
+Wyatt Arent <hello@wyatt.ninja>

packages/flutter_tools/lib/src/base/logger.dart

@@ -250,8 +250,7 @@ class _AnsiStatus extends Status {
     live = false;
 
     if (showElapsedTime) {
-      double seconds = stopwatch.elapsedMilliseconds / 1000.0;
-      print('\b\b\b\b${seconds.toStringAsFixed(1)}s');
+      print('\b\b\b\b${stopwatch.elapsedMilliseconds.toString()}ms');
     } else {
       print('\b ');
     }