tweaked readme example

README.md

@@ -43,7 +43,7 @@ When logging more complex messages, you can pass a closure instead
 that will be evaluated only if the message is actually logged:
 
 ```dart
-  log.fine(() => [1, 2, 3, 4, 5].map((e) => e * 4).join("-"));
+log.fine(() => [1, 2, 3, 4, 5].map((e) => e * 4).join("-"));
 ```
 
 See the [Logger] class for the different logging methods.