Merge pull request #100 from Sandrro/fix/docs

fixing docs

.readthedocs.yml

@@ -7,7 +7,7 @@ build:
   jobs:
     post_install:
       # Install dependencies
-      - pip install docs/requirements.txt
+      - pip install -r docs/requirements.txt
 
 sphinx:
   configuration: docs/source/conf.py