Readme fixes.

Author: dmitry-ivanov

README.md

@@ -145,7 +145,9 @@ There are three possible options for `$mutexTimeout` field:
 ### Handle several commands
 
 Sometimes it is useful to set common mutex for several commands. You can easily achieve this by setting them the same mutex name.
-By default, mutex name is generated based on a command's name and arguments. To change this, just override `getMutexName` method in your command:
+By default, mutex name is generated based on a command's name and arguments.
+
+To change this, just override `getMutexName` method in your command:
 
 ```php
 class ExampleCommand extends Command