Update .readthedocs.yml (#536)

DEKHTIARJonathan · web-flow · commit 7f6929466194 · 2018-04-30T06:23:44.000+02:00
diff --git a/.readthedocs.yml b/.readthedocs.yml
@@ -3,7 +3,7 @@ formats:
     - pdf
 
 python:
-    version: 3.6
+    version: 3.5
     pip_install: true
     extra_requirements:
         - doc
