Fix docstrings for `gensim.models.logentropy_model` (#1803)
Fix docstrings for `gensim.models.logentropy_model` (#1803)

* improve and correct documentation of models/logentropy_model

* include fixes according to comments

* implement fixes suggested

* associate methods with examples.

* fix minor typos

* doc fix

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