test rtd try 4

.readthedocs.yaml

@@ -18,6 +18,7 @@ build:
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
    configuration: rtd/source/conf.py
+   fail on warning: true
 
 # If using Sphinx, optionally build your docs in additional formats such as PDF
 # formats:
@@ -27,5 +28,6 @@ sphinx:
 python:
    install:
    - requirements: rtd/requirements.txt
+   - requirements:requirements.txt
    - method: pip
      path: .