fixing circle-ci

.circleci/config.yml

@@ -1,10 +1,17 @@
 version: 2.1
 
+workflows:
+  main:
+    jobs:
+      - unit-tests
+      - build-docs:
+          filters:
+            branches:
+              only:
+                - master
+
 jobs:
   build-docs:
-    branches:
-      only:
-        - master
     docker:
       - image: circleci/python:latest
     steps:
@@ -32,9 +39,3 @@ jobs:
             sudo pip install pytest
             python -m pytest ./tests/unit
           name: Unit tests
-
-workflows:
-  main:
-    jobs:
-      - unit-tests
-      - build-docs