Man pages matching name neon in section 3:

neon.3.en	debian 10 / libneon27-dev
neon.3.en	debian 10 / libneon27-gnutls-dev
neon.3.en	debian 11 / libneon27-dev
neon.3.en	debian 11 / libneon27-gnutls-dev
neon.3.en	debian 12 / libneon27-dev
neon.3.en	debian 12 / libneon27-gnutls-dev