Change back to sphinx_rtd_theme because plotly isn't showing

Author: basnijholt

docs/environment.yml

@@ -21,4 +21,5 @@ dependencies:
   - cloudpickle
   - loky
   - furo
+  - sphinx_rtd_theme  # Remove when https://github.com/executablebooks/MyST-NB/issues/54 is fixed (again)
   - myst-parser

docs/source/conf.py

@@ -44,7 +44,8 @@
 language = None
 exclude_patterns = []
 pygments_style = "sphinx"
-html_theme = "furo"
+# TODO: change to "furo" when https://github.com/executablebooks/MyST-NB/issues/54 is fixed (again)
+html_theme = "sphinx_rtd_theme"
 html_static_path = ["_static"]
 htmlhelp_basename = "adaptivedoc"