When the committee writes a document, the result is often a variety of inconsistent spellings, grammar and punctuation. The same phrase can be written three different ways on the same page, sometimes with capitals, sometimes without. Generally, it’s a mess.
Nothing. Honestly. Spellcheck can be very useful for skimming through and catching obvious spelling mistakes, but it’s not as good as a human being. Just like most technology, its specific uses are matched by its faults. And as long as you recognise its limitations, that’s fine.