[OBM Admin] [OpenBioMaps/documentation] 29b264: Updating english desc. of box_custom module.

[ferenc-attila]

  Branch: refs/heads/master
  Home:   https://github.com/OpenBioMaps/documentation
  Commit: 29b264956da80391161a9d9e37426a8ba12b7582
      https://github.com/OpenBioMaps/documentation/commit/29b264956da80391161a9d9e37426a8ba12b7582
  Author: ferenc-attila <attila.ferenc.80 at gmail.com>
  Date:   2020-01-11 (Sat, 11 Jan 2020)

  Changed paths:
    M official_docs/en/modules.md

  Log Message:
  -----------
  Updating english desc. of box_custom module.