Keep list sorted

Change-Id: I34fd3ed006bdcecbe8b7e1f17cb379242a5eef95
diff --git a/include/sal/log-areas.dox b/include/sal/log-areas.dox
index 7715f78..b0dc5ab 100644
--- a/include/sal/log-areas.dox
+++ b/include/sal/log-areas.dox
@@ -203,8 +203,8 @@ certain functionality.

@li @c filter.config
@li @c filter.eps
@li @c filter.icgm
@li @c filter.flash
@li @c filter.icgm
@li @c filter.ms - escher import/export
@li @c filter.odfflatxml
@li @c filter.os2met