add options to the list of API module endpoints

[nievax]

on the API overview page (.../api/) in the user GUI of V2.3.0,
it would be nice to have the following also in the module endpoints list:

.../api/v1/options/

[MyPyDavid]

it's missing from here:

rdmo/rdmo/core/views.py

Line 64 in 1d29d96

for name in [

[MyPyDavid]

it's added in 2.3.1