Fix issues with building docs.

Author: GrahamDumpleton

docs/conf.py

@@ -73,7 +73,7 @@
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
-exclude_patterns = ["_build"]
+exclude_patterns = ["_build", ".venv", "venv"]
 
 # The reST default role (used for this markup: `text`) to use for all documents.
 # default_role = None
@@ -104,10 +104,7 @@
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 
-import sphinx_rtd_theme
-
 html_theme = "sphinx_rtd_theme"
-html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the