I don't think I've ever seen a style where a { on its own line isn't matched by a } on its own line. The code you posted is very jarring. At a glance, I would suspect improper indentation or a missing closing braces. You're reader's first impression shouldn't be that it's broken code.

I'd use this:

my @headings = (
   { key => 'k',    name => 'Kanji',      class => 'kanji'     },
   { key => 'skip', name => 'SKIP',       class => 'skip-code' },
   { key => 'co',   name => 'Suggestion', class => 'skip-code' },
   { key => 'disc', name => 'Discussion'                       },
);
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The idea is to make the differences between the lines stand out.