DOCS: Update mocking for RTD
DOCS: Update mocking for RTD

samihuc/PolyglotDB,MontrealCorpusTools/PolyglotDB,MontrealCorpusTools/PolyglotDB,PhonologicalCorpusTools/PyAnnotationGraph,PhonologicalCorpusTools/PyAnnotationGraph,samihuc/PolyglotDB,PhonologicalCorpusTools/PolyglotDB,PhonologicalCorpusTools/PolyglotDB