Update sphinx from 1.8.3 to 1.8.5

requirements/dev.txt

@@ -2,9 +2,9 @@
 
 -r prod.txt
 
-Sphinx==1.8.3 \
-    --hash=sha256:429e3172466df289f0f742471d7e30ba3ee11f3b5aecd9a840480d03f14bcfe5 \
-    --hash=sha256:c4cb17ba44acffae3d3209646b6baec1e215cad3065e852c68cc569d4df1b9f8
+Sphinx==1.8.5 \
+    --hash=sha256:9f3e17c64b34afc653d7c5ec95766e03043cc6d80b0de224f59b6b6e19d37c3c \
+    --hash=sha256:c7658aab75c920288a8cf6f09f244c6cfdae30d82d803ac1634d9f223a80ca08
 Werkzeug==0.14.1 \
     --hash=sha256:d5da73735293558eb1651ee2fddc4d0dedcfa06538b8813a2e20011583c9e49b \
     --hash=sha256:c3fd7a7d41976d9f44db327260e263132466836cef6f91512889ed60ad26557c