duplicatable is spelled wrong

[krtschmr]

are those things really typos?
i'm not a native speaker but quick google search tells me it's kinda a legit word and a thing.

[MikeRogers0]

If anyone would like to open a PR for this:

https://github.com/TypoCI/spellcheck-action/blob/master/spec/lib/spellcheck/word_spec.rb#L11 - Update this test to include this word as being valid (The test should fail at this point)

https://github.com/TypoCI/spellcheck-action/blob/master/db/dict/contextual/misc.dic - Add the new word to this file

The tests should then pass & I'll happily accept the change :)