fixup small wording fixes in perlsub.pod

Author: leonerd

pod/perlsub.pod

@@ -450,8 +450,8 @@ positional parameters, these are lexical variables which will contain values
 passed by the caller when the subroutine is invoked.  Whereas positional
 parameters take their values from the corresponding position in the list
 passed by the caller, named parameters are matched by name-value pairs
-from the caller, where the name matches the variable name of the parameter
-but the order of the pairs is not significant.
+from the caller.  The passed-in name matches with the variable name of the
+parameter but the order of the pairs is not significant.
 
 Named parameters in signatures are currently considered B<experimental>, and
 their behaviour may change in future releases of Perl.  Uses of named
@@ -470,8 +470,8 @@ allowed after any named ones.
 
 To invoke this function, the caller must pass pairs of names and values to
 provide values for the parameters.  Each name must match the name of one of
-the variables, omimtting its leading C<$> sigil.  The order of these values
-is not important; both of the following lines will cause the same behaviour.
+the variables, omitting its leading C<$> sigil.  The order of these values
+is not important; both of the following lines will cause the same behaviour:
 
     foo(alpha => "A", beta => "B");
     foo(beta => "B", alpha => "A");