small edit on installation docs
-============
Installation
============
In order to make use of the PyMedPhys library, you'll need Python installed on
your workstation. Although not essential, we recommend that you install the
Anaconda Python distribution which is an open source, optimized Python
-(and R) distrubution. Download the latest Anaconda Python **3** (not 2) version
+(and R) distribution. Download the latest Anaconda Python **3** (not 2) version
from `here <https://www.anaconda.com/download/>`__.
.. note::
