Corrected version number to 3 digits.

Docker-DCO-1.1-Signed-off-by: Fred Lifton <fred.lifton@docker.com> (github: fredlf)

docs/sources/index.md

@@ -87,7 +87,7 @@ To learn about Docker in more detail and to answer questions about usage and imp
 
 ## Release Notes
 
-<b>Version 1.1</b>
+<b>Version 1.1.0</b>
 
 ### New Features