Merge branch 'dev_docs' into 'main'

modify configuration for rtd project

See merge request focus/focus-framework!31

.readthedocs.yaml

@@ -8,10 +8,7 @@ version: 2
 build:
   os: ubuntu-20.04
   tools:
-  - sphinx
-
-#conda:
-#  environment: envINEED_win.yml
+    python: "3.8"
 
 sphinx:
    configuration: docs/source/conf.py