[OBM Admin] [OpenBioMaps/documentation] edbddf: Update functions.md

[Bán Miklós]

  Branch: refs/heads/master
  Home:   https://github.com/OpenBioMaps/documentation
  Commit: edbddf04f6e74d6619c0a1dca02de8653dc9c5fd
      https://github.com/OpenBioMaps/documentation/commit/edbddf04f6e74d6619c0a1dca02de8653dc9c5fd
  Author: Bán Miklós <banm at vocs.unideb.hu>
  Date:   2020-03-08 (Sun, 08 Mar 2020)

  Changed paths:
    M official_docs/en/functions.md

  Log Message:
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  Update functions.md