ARROW-16949: [Doc] Add Glossary to the New Contributor's Guide (#13951)
ARROW-16949: [Doc] Add Glossary to the New Contributor's Guide (#13951)

Authored-by: Alenka Frim <f50e75d4c31e511ffacbf2da8f53d7ed4bd8eabe@gmail.com>
Signed-off-by: Alenka Frim <f50e75d4c31e511ffacbf2da8f53d7ed4bd8eabe@gmail.com>
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