Minor documentation improvements.

LUFA/DoxygenPages/ChangeLog.txt

@@ -21,7 +21,8 @@
   *
   *  <b>Fixed:</b>
   *  - Core:
-  *   - None
+  *   - Fixed possible enumeration error if the user application selects a pipe other than the default Control pipe between the Powered and Default states of
+  *     the host state machine
   *  - Library Applications:
   *   - None
   *