tweak changes file.

changes/bug11118

@@ -1,3 +1,4 @@
   o Documentation:
-    - Fix max client name length in HiddenServiceAuthorizeClient description:
-      should have been 16 and not 19. Fix ticket 11118.
+    - Fix the max client name length in the manpage's description of
+      HiddenServiceAuthorizeClient description: it should have been
+      16, not 19. Fixes bug 11118; bugfix on 0.2.1.6-alpha.