website-doc.sh: announces.yml: fill the page for the links

This allows tuning of the links when the announce is made in
Changelog.maint.html.

Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>

docs/website-doc.sh

@@ -86,7 +86,7 @@ function releases () {
     v="$(echo $title \
       | sed -r -e 's,^### [a-Z]+ (v[^ ]+).*,\1,'
     )"
-    echo "- {version: '${v}', link: '$link'}"
+    echo "- {version: '${v}', link: 'Changelog.html#${link}'}"
   done | tee -a "$ANNOUNCES_YML"
 }