[atk] doc: add new symbols section for 2.12 symbols

[Alejandro Piñeiro Iglesias <apinheiro src gnome org>]

commit 8f371c0f6c269f82f5d2a431b5099ccfec6cee85
Author: Alejandro Piñeiro <apinheiro igalia com>
Date:   Tue Feb 18 18:57:47 2014 +0100

    doc: add new symbols section for 2.12 symbols

 docs/atk-docs.sgml |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/docs/atk-docs.sgml b/docs/atk-docs.sgml
index 9f9c736..393cc75 100644
--- a/docs/atk-docs.sgml
+++ b/docs/atk-docs.sgml
@@ -163,6 +163,8 @@
   <index id="api-index-2-10" role="2.10">
     <title>Index of new symbols in 2.10</title>
   </index>
-
+  <index id="api-index-2-12" role="2.12">
+    <title>Index of new symbols in 2.12</title>
+  </index>
 </book>