Update Trace document extraction fields

[sahithimuthyala]

Update Appendix B: Trace Document Extraction Fields based on Trace_Metadata- a more updated metadata dictionary that we send to clients during pre-sales conversations.

[daccetta2]

@peterhallerREL - I am going to leave this here until we hear more from Legal on Data Access.

Link to page: https://relativitydev.github.io/relativity-trace-documentation/docs/administrator_guide/fields.html#appendix-b-trace-document-extraction-fields