Sync adopters list of index.rst and README.md (#253)

Author: leonarduschen

README.md

@@ -11,6 +11,7 @@ generic and more easily extensible to suit the needs of the different projects.
 Sites that are using this theme:
 
 - Pandas: https://pandas.pydata.org/docs/
+- NumPy: https://numpy.org/devdocs/
 - Bokeh: https://docs.bokeh.org/en/dev/
 - JupyterHub and Binder: https://docs.mybinder.org/, http://z2jh.jupyter.org/en/latest/, https://repo2docker.readthedocs.io/en/latest/, https://jupyterhub-team-compass.readthedocs.io/en/latest/
 - Jupyter Book beta version uses an extension of this theme: https://beta.jupyterbook.org

docs/index.rst

@@ -13,6 +13,7 @@ Other sites that are using this theme:
 - Bokeh: https://docs.bokeh.org/en/dev/
 - JupyterHub and Binder: https://docs.mybinder.org/, http://z2jh.jupyter.org/en/latest/, https://repo2docker.readthedocs.io/en/latest/, https://jupyterhub-team-compass.readthedocs.io/en/latest/
 - Jupyter Book beta version uses an extension of this theme: https://beta.jupyterbook.org
+- Fairlearn: https://fairlearn.github.io/quickstart.html
 
 
 .. toctree::