### Summary
Explicitly replaces all old docs pages with a link to the new docs. This
was required because 404 redirects didn't work for pages that previously
existed, though they worked non-existing paths that never existed.
To test:
> cd docs && make HTML
changelogs:
- remove unindented line in destination connector's sql.rst file
- add elasticsearch page into destination_connector.rst file
- Adds a destination connector to upload processed output into a
PostgreSQL/Sqlite database instance.
- Users are responsible to provide their instances. This PR includes a
couple of configuration examples.
- Defines the scripts required to setup a PostgreSQL instance with the
unstructured elements schema.
- Validates postgres/pgvector embedding storage and retrieval
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Co-authored-by: potter-potter <david.potter@gmail.com>
