Remove references to old CCNx format

Change-Id: I4e143c3e6ad3935ea2f89d637be56b54fd6d161d
Refs: #2580
diff --git a/conf.py b/conf.py
index 0a778ce..039bfb0 100644
--- a/conf.py
+++ b/conf.py
@@ -50,7 +50,7 @@
 # The short X.Y version.
 version = '0.2'
 # The full version, including alpha/beta/rc tags.
-release = '0.2-alpha-3'
+release = '0.2-alpha-4'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.