Fix display of contents on readthedocs

rebeccafair · rebeccafair · commit 488af525866c · 2021-04-14T09:23:32.000+01:00
Force update of sphinx-rtd-theme, see readthedocs/readthedocs.org#8070 for details
diff --git a/doc/requirements.txt b/doc/requirements.txt
@@ -1,3 +1,4 @@
-sphinx==3.5.1
+sphinx==3.5.4
 sphinx-argparse==0.2.5
 sphinx-autodoc-typehints==1.11.1
+sphinx-rtd-theme==0.5.2
