Strip out go.Layout.whatever from docs

[nicolaskruchten]

Right now in places like https://plot.ly/python/shapes/ we still use go.layout.Shape in places where this is unnecessary... instead of .add_shape(go.layout.Shape( whatever )) we can just use .add_shape( whatever ).

@Mahdis-z please do a search for go.layout. (note the trailing dot!) and refactor all those instances into either straight dicts or, in cases of add_shape above, just remove the intermediate object and pass the kwargs directly. You can't just do a blind search-and-replace though because in certain cases we show the old usage on purpose :)

[nicolaskruchten]

In cases like the https://plot.ly/python/shapes/ page, there are way too many newlines in these examples, so please go through and vertically condense those examples too :)

[LiamConnors]

Don't see any remaining references to go.layout.Shape. Closing