Use RTD theme.

Author: fkdosilovic

docs/source/conf.py

@@ -14,7 +14,7 @@
 # -- General configuration ---------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration
 
-extensions = []
+extensions = ["sphinx_rtd_theme"]
 
 templates_path = ["_templates"]
 exclude_patterns = []
@@ -23,5 +23,5 @@
 # -- Options for HTML output -------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#options-for-html-output
 
-html_theme = "alabaster"
+html_theme = "sphinx_rtd_theme"
 html_static_path = ["_static"]