Corrected cref_errlog output from msgfmt (was overwriting)

msgfmt

@@ -60,7 +60,7 @@ awk -vid="$id" -vurl_root="$url_root" -vcref_errlog="$cref_errlog" '
       # hashcache is cleared before the run, then this is likely to occur for
       # every cref)
       if ( result == "" && cref_errlog && id ) {
-        printf id >cref_errlog
+        printf id"\n" >>cref_errlog
       }
 
       gsub(/\[cref:.*?\]/, url_root result)