debian: Update translation updates changelog entries

Give proper attribution for French typo fix, and add Spanish typo bug
closure, previously committed to the repostory.

debian/changelog

@@ -95,9 +95,13 @@ dpkg (1.17.0) UNRELEASED; urgency=low
     Closes: #711936
   * Add GCJFLAGS support to dpkg-buildflags. Closes: #708375
 
-  [ Updated manpages translations ]
-  * Fix incorrect translation of "fortify" in French manpage for dpkg-buildflags
-    Closes: #712976
+  [ Updated programs translations ]
+  * Fix typo in Spanish translation of update-alternatives.
+    Thanks to Javier Fernandez-Sanguino <jfs@debian.org>. Closes: #713020
+
+  [ Updated man page translations ]
+  * Fix wrong translation of "fortify" in French dpkg-buildflags(1) man page.
+    Thanks to Christian Perrier <bubulle@debian.org>. Closes: #712976
 
  -- Guillem Jover <guillem@debian.org>  Fri, 03 Aug 2012 13:21:00 +0200