docs: ensure the docs group gets installed when building docs

Author: 56kyle

.readthedocs.yml

@@ -4,5 +4,13 @@ build:
   os: ubuntu-22.04
   tools:
     python: "3.13"
+
+python:
+  install:
+    - method: pip
+      path: .
+      extra_requirements:
+        - docs
+
 sphinx:
   configuration: docs/conf.py

{{cookiecutter.project_name}}/.readthedocs.yml

@@ -4,5 +4,14 @@ build:
   os: ubuntu-22.04
   tools:
     python: "3.13"
+
+python:
+  install:
+    # This is required for ReadTheDocs to consider it a Python project and install dependencies.
+    - method: pip
+      path: .
+      extra_requirements:
+        - docs
+
 sphinx:
   configuration: docs/conf.py