docs updates #347
Description
Various things that have been mentioned / came up when presenting
- actual explicit "how to call" section in parallelize your own function https://libatoms.github.io/workflow/overview.parallelisation.html#creating-auto-parallelized-functions
- simple multi step example showing output of one op feeding into input of next, possibly in https://libatoms.github.io/workflow/first_example.html, possibly a new "second example" subsection?
others?