Review the use of the work "toolkit" in documentation

# 📚 Documentation Request

We should review the use of "toolkit" in our documentation. This is slightly non-trivial as at least one of the images includes the word toolkit (sometimes "tool kit") so not just a find and replace.

Start by searching the documentation for occurrences of “toolkit” and “tool kit”, then inspect any matching images as well as text. The issue is complete only after each occurrence has been reviewed and the intended wording is consistently resolved, including text embedded in images.

Written by the indexing model from the issue text.