Update names in n2khab-mne-selections

[florisvdh]

These names haven't been updated in the data sources that result from the n2khab-mne-selections (gitlab) repo. They need to be updated in that source, and updated accordingly here (and elsewhere).

For now they were overruled ad-hoc in generate_textdata, but is a temporary quickfix.

• d7f3b3c: Inundatiemeetnet became Inundatiewatermeetnet