Merge pull request #155 from eyaylali/patch-1

fixes to data viz tutorial
Corrects spelling error.

Author: willingc

website/_site/assets/pdfs/setup/mac-setup.md

@@ -60,7 +60,7 @@ $ sudo pip install --upgrade setuptools
 
 <h5 style="text-align:center"><span style="color:#8c8c8c">virtualenv & virtualenvwrapper</span></h5>
 
-virtualenv\[9] creates isolated environments for each of your Python projects. It helps to solve version & dependency problems with multple Python installations and/or multiple versions of different Python packages.  We’ll use `pip` to install it:
+virtualenv\[9] creates isolated environments for each of your Python projects. It helps to solve version & dependency problems with multiple Python installations and/or multiple versions of different Python packages.  We’ll use `pip` to install it:
 
 ```bash
 $ sudo pip install virtualenv