Delete a phrase in S06:3314-3316 that gave surprising --help semantics; s/argument/option/ in the same sentence so that '--' can be handled properly.

Author: Geoffrey Broadwell

S06-routines.pod

@@ -3311,9 +3311,8 @@ semicolon-style declaration that controls the whole file.
 
 If an attempted dispatch to C<MAIN> fails, the C<USAGE> routine is called.
 If there is no C<USAGE> routine, a default message is printed to standard
-error. If the C<MAIN> routine does not declare a named parameter C<:$help>,
-and C<--help> is passed as a command line argument to the program, the usage
-message is printed to standard output instead.
+error. If C<--help> is passed as a command line option to the program, the
+usage message is printed to standard output instead.
 
 This usage message is automatically generated from the signature (or
 signatures) of C<MAIN>.  This message is generated at compile time,