[GRASS-git] [OSGeo/grass] ff0f93: gunittest: update module interface doctest (#1699)

[nilason]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass
  Commit: ff0f931e7b688a28333753a1f1d1250484f2df6f
      https://github.com/OSGeo/grass/commit/ff0f931e7b688a28333753a1f1d1250484f2df6f
  Author: nilason <n_larsson at yahoo.com>
  Date:   2021-07-04 (Sun, 04 Jul 2021)

  Changed paths:
    M python/grass/pygrass/modules/interface/module.py

  Log Message:
  -----------
  gunittest: update module interface doctest (#1699)

adapts documentation to the addition of 'weighting_function'
parameter to 'r.neighbors' introduced with
https://github.com/OSGeo/grass/commit/20f370c9ee983fd8bb30e9dd55c9acf528f562ad