Fix bugfix version in Bug 30649: Changes file.

changes/bug30649

@@ -1,4 +1,4 @@
   o Minor bugfixes (circuit padding):
     - On relays, properly check that a padding machine is absent before
       logging a warn about it being absent. Fixes bug 30649;
-      bugfix on 0.4.1.1-alpha.
+      bugfix on 0.4.0.1-alpha.