Update CHANGELOG.md

CHANGELOG.md

@@ -1,4 +1,4 @@
-This document details change between individual versions.
+This document details changes between individual versions.
 
 For instructions on how to upgrade from one version to another, please see the dedicated UPGRADING document.
 
@@ -8,4 +8,4 @@ For instructions on how to upgrade from one version to another, please see the d
 
 0.11 (2013-01-29)
 -----------------
-Initial Release
+Initial Release