Merge pull request #523 from tbrowder/func-pod-fix

fix typo

Author: jonathanstowe

doc/Language/functions.pod

@@ -724,8 +724,8 @@ currently (2015.02) only implements them for subroutine parameters.
 
 X<|MAIN>
 
-The sub with the special name C<MAIN> is executed after all relevant phaser
-and it's signature is the means by which command line arguments can be parsed.
+The sub with the special name C<MAIN> is executed after all relevant phasers,
+and its signature is the means by which command line arguments can be parsed.
 Multi methods are supported and a usage method is automatically generated and
 displayed if no command line arguments are provided.