readthedocs.yml fixes

readthedocs.yml

 # readthedocs.yml
 # Read the Docs configuration file
 # See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
-build:
-    image: latest
+
+# Required
+version: 2
+
+# Build documentation in the docs/ directory with Sphinx
+sphinx:
+  configuration: docs/conf.py
 
 conda:
-    environment: docs/rtd_environment.yml
+  environment: docs/rtd_environment.yml
+
+build:
+  image: latest
 
 python:
-    version: 3.7
-    setup_py_install: true
\ No newline at end of file
+  version: 3.7
+  install:
+    - method: setuptools
+      path: .
\ No newline at end of file