Porting/release_managers_guide.pod: Module::CoreList has no META.yml file

Porting/release_managers_guide.pod: Module::CoreList has no META.yml file

During my in-progress release:

    $ git --no-pager grep 2.44 -- ./dist/Module-CoreList/
    dist/Module-CoreList/Changes:2.44    Sat Jan 22 2011
    dist/Module-CoreList/lib/Module/CoreList.pm:$VERSION = '2.44_01';
    dist/Module-CoreList/lib/Module/CoreList.pm:    'Module::CoreList'      => '2.44_01',

It doesn't have a META.yml anymore, instead a MYMETA.yml is generated
for us. So the bit that told us to update it in
Porting/release_managers_guide.pod was out of date.