Merge pull request #256 from bclaremar/patch-3

add :: to get code formatting of the one-liners

Author: rkdarst

content/dependencies.rst

@@ -186,7 +186,7 @@ Exercises 2
       print('Numpy version: ', numpy.__version__)
       print('Matplotlib version: ', matplotlib.__version__)
 
-     Or use the one-liner if you have access to a terminal like bash
+     Or use the one-liner if you have access to a terminal like bash::
 
       python -c 'import numpy; print(numpy.__version__)'
       python -c 'import matplotlib;print(matplotlib.__version__)'