fix capitalization

Author: esc

docs/scenarios/scientific.rst

@@ -42,7 +42,7 @@ signal processing.
 Matplotlib
 ----------
 
-`matplotlib <http://matplotlib.sourceforge.net/>`_ is a flexible plotting
+`Matplotlib <http://matplotlib.sourceforge.net/>`_ is a flexible plotting
 library for creating interactive 2D and 3D plots that can also be saved as
 manuscript-quality figures.  The API in many ways reflects that of `MATLAB <http://www.mathworks.com/products/matlab/>`_,
 easing transition of MATLAB users to Python.  Many examples, along with the