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9ae838e5 - feat: add --include-orig-elements option to Ingest CLI (#2687)

feat: add --include-orig-elements option to Ingest CLI (#2687) **Summary** Add an `--include-orig-elements` option to the Ingest CLI to allow users to specify that corresponding new chunking parameter. **Reviewer** A lot of this is cleanup, the second commit is where the actual adding of this option are. The first commit fixes a number of inaccuracies in the documentation and does some other clean-up. --------- Co-authored-by: scanny <scanny@users.noreply.github.com>