Corrects misspellings of 'Sphinx'
@@ -137,7 +137,7 @@ Manpages
--------
* To make the manpages, run ``make man``. Please note there is a bug
- in spinx 1.1.3 which makes this fail. Upgrade to the latest version
+ in Sphinx 1.1.3 which makes this fail. Upgrade to the latest version
of Sphinx.
* Then preview the manpage by running ``man _build/man/docker.1``,
where ``_build/man/docker.1`` is the path to the generated manfile
