[css-ruby] Fix backwards table heading

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extra : rebase_source : 17f9d53110eaf831f3d68847bf38b3fde7414c1c
[css-ruby] More linkification

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extra : rebase_source : c3f7da725da9d77c712a0d2f526fd9973b6f2c2b
[css-counter-styles] heading grammar

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extra : rebase_source : b88907624bd980d0a3e6ef868a3587a8f7572a9d