reword sentence on return value of try block

Author: schultzdavid

doc/Language/exceptions.rakudoc

@@ -255,8 +255,8 @@ Please consult the section on
 L<resuming of exceptions|/language/exceptions#Resuming_of_exceptions>
 for more information on this.
 
-A C<try> block is a normal block and as such treats its last statement
-as the return value of itself. We can therefore use it as a right-hand
+A C<try> block is a normal block and as such, uses its last statement
+as its return value. We can therefore use it as a right-hand
 side.
 
 =begin code