Split test results 2 into multiple files

[tonyfast]

• split results.md
• add to the documentation toc

cc: @Jenneh

[tonyfast]

@Jenneh you can preivew the layout here: https://iota-school.github.io/notebooks-for-all/branch/results-split/exports/user-tests/2-content/results/

[Jenneh]

Hello, This looks great! I found one issue that needs to be resolved before we make this live. Currently, clicking "conclusions" leads to a 404 page.

[tonyfast]

thanks for testing this @Jenneh i fixed the table of contents to avoid a 404 and cleaned up a list. im going to merge this so it hits the main and site and we can defer other content changes to later.