old_contents: MIDDLE_OLD_GERMAN_CORPORA = [{
                           'name': 'middle_low_german_models_cltk',
                           'origin': 'https://github.com/cltk/middle_low_german_models_cltk.git',
                           'location': 'remote',
                           'type': 'model'
  }]
  
new_contents: MIDDLE_LOW_GERMAN_CORPORA = [{
                           'name': 'middle_low_german_models_cltk',
                           'origin': 'https://github.com/cltk/middle_low_german_models_cltk.git',
                           'location': 'remote',
                           'type': 'model'
  }]
  
subject: Update corpora.py