update readme

README.md

@@ -33,7 +33,7 @@ echo call_decorator_func_array([$calc, 'sum'], [1, 2]); // Total execution: 1.00
 Or inline
 ```php
 $timerOnSum = (new Timer)->wrapper(fn($a, $b) => $calc->sum($a, $b));
-$this->assertSame('Total execution: 1.00034234 ms; Result: 3', $timerOnSum(1, 2));
+echo $timerOnSum(1, 2); // Total execution: 1.00034234 ms; Result: 3
 ```
 
 # Validation