Update CognitiveServices change log

Author: cormacpayne

src/ResourceManager/CognitiveServices/ChangeLog.md

@@ -18,8 +18,6 @@
         - Additional information about change #1
 -->
 ## Current Release
-
-## Version 1.0.0
 * Integrate with Cognitive Services Management SDK version 1.0.0.
 * Fix an account name length checking bug.
 
@@ -42,4 +40,4 @@
 
 ## Version 0.4.2
 
-## Version 0.4.1
+## Version 0.4.1