Fix some retructuredText typos.

Author: peplin

docs/installation.rst

@@ -15,15 +15,15 @@ currently works with Python 2.6 and 2.7, but not Python 3.x.
 
 - **Windows**
 
-   #. Download and run the [Python 2.7.x MSI
-      installer](https://www.python.org/download/releases/2.7.8/). Make sure to
-      select to option to ``Add python.exe to Path``.
+   #. Download and run the `Python 2.7.x MSI installer
+         <https://www.python.org/download/releases/2.7.8/>`_. Make sure to
+         select to option to ``Add python.exe to Path``.
    #. Add the Python Scripts directory your PATH:
       ``PATH=%PATH%;c:\Python27\Scripts``. If you aren't sure how to edit your
       ``PATH``, see `this guide for all versions of Windows
       <https://www.java.com/en/download/help/path.xml>`_. Log out and back in for
       the change to take effect.
-   #. Install [pip](https://pip.pypa.io/en/latest/installing.html#install-pip), a
+   #. Install `pip <https://pip.pypa.io/en/latest/installing.html#install-pip>`_, a
       Python package manager by saving the ``get-pip.py`` script to a file and
       running it from a terminal.