[Datasets] [Docs] Add references to glossary terms

[bveeramani]

Description

#32400 adds a glossary, but terms won't link to the glossary until we manually link them. We should go through the Datasets documentation add the :term: role where appropriate:

:term:`block format <Block format>`

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[bveeramani]

Closing because we removed the Data glossary in #36145