better documentation for module_type and make_base

It would be helpful if there was better documentation for the `module_type`. E.g.:
```
- id: go
make_base: TRUE
module_type: minimal
```
What does `module_type: minimal` mean?

Also, better documentation about `make_base: TRUE` would be helpful.

Start by locating the existing documentation for the module_type and make_base configuration options. Document what module_type: minimal and make_base: TRUE mean, including the example shown in the issue; done means a reader can understand both settings without further clarification.

Written by the indexing model from the issue text.