[PATCH] Minor fix in README.EXT

[Daniel Kelley]

One of the references to rb_define_module_under() has an incorrect
prototype. Here's the patch:

Index: README.EXT
===================================================================
RCS file: /src/ruby/README.EXT,v
retrieving revision 1.17
diff -u -r1.17 README.EXT
--- README.EXT 3 Mar 2004 04:55:31 -0000 1.17
+++ README.EXT 26 Apr 2004 02:04:35 -0000
@@ -807,7 +807,7 @@

Defines a new Ruby module.

- VALUE rb_define_module_under(VALUE module, const char *name, VALUE super)
+ VALUE rb_define_module_under(VALUE module, const char *name)

Defines a new Ruby module under the module's namespace.