Add sphinx_markdown_tables to docs extensions

Needed in order to use Markdown tables with Sphinx.
https://github.com/ryanfox/sphinx-markdown-tables

Note that the extension must be pip-installed in order to build the HTML
correctly.

doc/source/conf.py

@@ -91,7 +91,9 @@ def setup(app):
     'sphinx.ext.imgmath',
     'sphinx.ext.napoleon',
     'sphinx.ext.intersphinx',
-    'sphinx.ext.viewcode']
+    'sphinx.ext.viewcode',
+    'sphinx_markdown_tables',
+]
 autodoc_default_flags = ['members', 'show-inheritance']
 autodoc_member_order = 'bysource'
 
@@ -256,6 +258,3 @@ def setup(app):
      author, 'NiftyNet', 'One line description of project.',
      'Miscellaneous'),
 ]
-
-
-