Fix versioning in the documentation

Change-Id: I0b8b599972cc32839b6aefe6b9e96861cfd522f8

docs/source/conf.py

diff --git a/docs/source/conf.py b/docs/source/conf.py
index 31a3ac3..86e00f1 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -48,7 +48,7 @@
 # built documents.
 #
 # The short X.Y version.
-version = '1.11'
+version = '1.12'
 # The full version, including alpha/beta/rc tags.
 release = '1.12.0'