[library-web] fix for .programlisting to not overflow anymore.

[Frederic Peters <fpeters src gnome org>]

commit 96dd320e2cb1e4ff831b1d5454a8aa3012f615d3
Author: Bastian Ilsø <bastianilso gnome org>
Date:   Sun Jan 25 19:49:06 2015 +0100

    fix for .programlisting to not overflow anymore.

 data/skin/gtkdoc.css |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/data/skin/gtkdoc.css b/data/skin/gtkdoc.css
index 1ac3059..3dddb10 100644
--- a/data/skin/gtkdoc.css
+++ b/data/skin/gtkdoc.css
@@ -19,6 +19,7 @@ body
   background: rgba(114, 159, 207, 0.1);
   border: solid 1px rgba(114, 159, 207, 0.2);
   padding: 0.5em;
+  overflow: auto;
 }
 .variablelist
 {