Fix indentation error in a docstring that resulted in a sphinx error.

docs/source/conf.py

@@ -38,6 +38,7 @@ release = __version__
 extensions = ["sphinx.ext.napoleon", "autoapi.extension", "myst_parser"]
 autoapi_type = "python"
 autoapi_dirs = ["../../plotid", "../../tests"]
+# autoapi_keep_files = True
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ["_templates"]

docs/source/modules.rst

-plotid
-======
-
-.. toctree::
-   :maxdepth: 4
-
-   plotid