fixing broken documentation

Author: Tim Huff

Makefile

@@ -85,7 +85,7 @@ install-sphinx-deps: ## Only install the sphinx dependencies
 # The following is auto-generated by sphinx-quickstart:
 # To test out doc changes locally, run
 # poetry run make html && open build/html/index.html
-SPHINXOPTS    ?=
+SPHINXOPTS    ?= -W
 SPHINXBUILD   ?= sphinx-build
 SOURCEDIR     = sphinx_docs
 BUILDDIR      = build

pyproject.toml

@@ -50,6 +50,7 @@ pillow = "^11.0.0"
 pydantic = "^2.0.0"
 python = ">=3.9,<4.0"
 python-dateutil = "^2.8.2"
+pyyaml = "^6.0.0"
 sphinx-rtd-theme = {version = "^1.3.0", python = ">=3.9,<4.0"}
 toml = "^0.10.2"