(Document Edition History): Fixed typo.

doc/Protocol-A.texi

@@ -9663,7 +9663,7 @@ All calls from 0--56.
 
 @item 10.6: 2002-03-29
 
-@emph{Fixed errors}: The format of the user area was plain wrong.  The
+@emph{Fixed errors:} The format of the user area was plain wrong.  The
 examples for @req{query-read-texts} and @req{get-membership} were
 wrong.  The @field{idle-time} field is only affected by the
 @req{user-active} request, not by all activity (@pxref{Session