[Core] Microbatch follow-up for 1.9 release of parallel batch execution

[runleonarun]

Link to the page(s) on docs.getdbt.com requiring updates

https://docs.getdbt.com/docs/build/incremental-microbatch#what-is-microbatch-in-dbt

Tell us more about this update

• Please delete these lines because we have a new page for this
• I strongly suggest moving the parallel batches section to its own page. But we'd need to make sure it fits appropriately and is referenced form the other page.
• The incremental microbatch page is pretty long and hard to read. Can we break anything else down into another page?
• Do the conditions for parallel batches really need to be a table? Why not bullets?

Reviewers/Stakeholders/SMEs

Leona and Mirna

Related GitHub issues

No response

Additional information

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