add missing links to Summary and Data Systems

[agilgur5]

Summary

Noticed there were some missing links in a few places

Details

• Summary was missing two links:
  • "Lazy vs Eager Execution", which had a few links to it - those links ended up directing to the source code of the GitBook directly instead of the rendered docs (see screenshot)
  • "Conquering the Python Environment", which seemed to have no links to it
    • discovered it while editing the docs myself and noticing that it was missing from the Summary
• Data Systems was missing an S3 link

Screenshot

Of a link going to source instead of rendered docs -- see bottom left linking to GitHub directly:

Future Work(?)

• The top-level README is also missing some links, but not sure if that is intentional or not. As in, if it only has a selection of links intentionally.

  • Installation docs, Notifications docs, Parameters docs, LLM SDK reference, etc are not linked to from the README

• Some examples from the main source repo seem to be missing as well. Similarly not sure if that is intentional or not

  • Resnet, March Madness, etc are not in the example workflows
  • The release script does not include those examples