Fix Lda Sequence model by updating to num_documents (#2410)
Fix Lda Sequence model by updating to num_documents (#2410)

* Fix #2332 by updating to num_documents

* Update gensim/models/ldaseqmodel.py acc to @mpenkov

Co-Authored-By: Bharat123rox <5c7faf937c637877dd1664c2b613d99528265ce1@gmail.com>

gojomo/gensim,RaRe-Technologies/gensim,piskvorky/gensim,gojomo/gensim,gojomo/gensim,RaRe-Technologies/gensim,piskvorky/gensim,piskvorky/gensim,RaRe-Technologies/gensim,gojomo/gensim,RaRe-Technologies/gensim