Traling spaces removal in text CHANGES files.

diff --git a/docs/xsls/changes.xsls b/docs/xsls/changes.xsls
index c6c31f4..f9c2efb 100644
--- a/docs/xsls/changes.xsls
+++ b/docs/xsls/changes.xsls

@@ -85,7 +85,8 @@
 
         !{$prefix}
 
-        !{translate(substring($text, $offset, $length), '&#xA0;', ' ')}
+        !{normalize-space(translate(substring($text, $offset, $length),
+                                    '&#xA0;', ' '))}
 
         X:text {&#10;}