[gnome-dictionary] Update attributes file

[Emmanuele Bassi <ebassi src gnome org>]

commit c6af3a89108e78fd818acd276e35f31bce396f86
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Tue Sep 12 09:07:35 2017 +0100

    Update attributes file
    
    Drop the RFC from the list of archived files from Git.

 .gitattributes |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/.gitattributes b/.gitattributes
index 333859e..1270bdd 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -2,3 +2,4 @@
 /.gitignore                     export-ignore
 /gnome-dictionary.doap          export-ignore
 /build-aux/make_release.sh      export-ignore
+/docs/rfc2229.txt               export-ignore