Fixed ReadTheDocs yaml (for realsies)

.readthedocs.yaml

@@ -1,9 +1,13 @@
 version: 2
 
 build:
-  os: ubuntu-22.04
+  os: "ubuntu-22.04"
   tools:
-    python: 3.12
+    python: "3.12"
 
 sphinx:
-  configuration: docs/conf.py
+  configuration: "docs/conf.py"
+
+python:
+  install:
+    - requirements: "docs/requirements.txt"

docs/conf.py

@@ -30,7 +30,9 @@
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
-extensions = []
+extensions = [
+    'sphinx_rtd_theme'
+]
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']

docs/requirements.txt

@@ -0,0 +1 @@
+sphinx_rtd_theme==3.0.2