Also added an index.rst file for executors, renamed the
azurearm.rst file (Was misspelled with "azureare"), and
removed the xbps-pkg.rst file since that is an invalid
reference.
Removes the "Full list of builtin ..." from each module reference list, leaving just the module type for scanability.
Refs #12470
Refs #10206
Refs #10480
Refs #23522
Refs #33023