Update version of read the docs theme (#468)

* Changed version of Sphinx to be able to used style

* Changed version of sphinx and sphinx theme

setup.py

@@ -57,7 +57,7 @@
         "joblib",
     ],
     extras_require={
-        'docs': ["sphinx>=1.6", "sphinx_rtd_theme>=0.2.4", "sphinx-click"],
+        'docs': ["sphinx>=1.7", "sphinx_rtd_theme>=1.2.2", "sphinx-click"],
         'dev': ["pre-commit>=2.10.0"]
     },
 )