This PR adds links to some folder references in the docs, making them
easier to navigate.
Please advise if these need to be made to be full URIs rather than
relative paths in order to work correctly with the doc generation
tooling that is in place.
The current link goes to doc/dev#init, where there is nothing
about initialization. This PR fixes the link so that it points
to the initialization section lower down on the ffi page.
