Fix Sphinx spelling (#37)

Author: stevegore

README.md

@@ -103,7 +103,7 @@ For general guidelines, see [Contributing](https://github.com/qctrl/.github/blob
 
 ### Building documentation
 
-Documentation generation relies on [Spinx](http://www.sphinx-doc.org). Automated builds are done by [Read The Docs](https://readthedocs.com).
+Documentation generation relies on [Sphinx](http://www.sphinx-doc.org). Automated builds are done by [Read The Docs](https://readthedocs.com).
 
 To build locally:
 

README.rst

@@ -118,7 +118,7 @@ For general guidelines, see `Contributing <https://github.com/qctrl/.github/blob
 Building documentation
 ^^^^^^^^^^^^^^^^^^^^^^
 
-Documentation generation relies on `Spinx <http://www.sphinx-doc.org>`_. Automated builds are done by `Read The Docs <https://readthedocs.com>`_.
+Documentation generation relies on `Sphinx <http://www.sphinx-doc.org>`_. Automated builds are done by `Read The Docs <https://readthedocs.com>`_.
 
 To build locally: