"man rpm" currently shows "-d" used for two different purposes:

   PACKAGE QUERY OPTIONS:
       -d, --artifactfiles
              List only artifact files (implies -l).

       ... snip ...

       -d, --docfiles
              List only documentation files (implies -l).

OTOH, "rpm --help" appears to get it right:

  Query options (with -q or --query):
    -c, --configfiles                  list all configuration files
    -d, --docfiles                     list all documentation files
    -L, --licensefiles                 list all license files
    -A, --artifactfiles                list all artifact files
    ... snip ...