* [MRG] Fix random_state docstrings in decomposition module
* Add more details, and specify reproducibility
* [MRG] docs for random_state in decomposition module
Update the wording for reproducible results.
* [MRG] Update doc for optional parameter to match numpy doc style
* apply new style
Co-authored-by: Guillaume Lemaitre <g.lemaitre58@gmail.com>