Removed unecessary spacing

src/Validation/Validation.php

@@ -180,7 +180,7 @@ class Validation
                 'enroute' => '/^2(?:014|149)\\d{11}$/',
                 'jcb' => '/^(3\\d{4}|2100|1800)\\d{11}$/',
                 'maestro' => '/^(?:5020|6\\d{3})\\d{12}$/',
-                'mc' => '/^(5[1-5]\\d{14})|(2(?:22[1-9]|2[3-9][0-9]|[3-6][0-9]{2}|7[0-1][0-9]|720)\\d{12})$/',                
+                'mc' => '/^(5[1-5]\\d{14})|(2(?:22[1-9]|2[3-9][0-9]|[3-6][0-9]{2}|7[0-1][0-9]|720)\\d{12})$/',
                 'solo' => '/^(6334[5-9][0-9]|6767[0-9]{2})\\d{10}(\\d{2,3})?$/',
                 'switch' => '/^(?:49(03(0[2-9]|3[5-9])|11(0[1-2]|7[4-9]|8[1-2])|36[0-9]{2})\\d{10}(\\d{2,3})?)|(?:564182\\d{10}(\\d{2,3})?)|(6(3(33[0-4][0-9])|759[0-9]{2})\\d{10}(\\d{2,3})?)$/',
                 'visa' => '/^4\\d{12}(\\d{3})?$/',