[gobject-introspection] Typo

[Behdad Esfahbod <behdad src gnome org>]

commit 243b92e934c433f925a3830b1e9f20294c6013c6
Author: Behdad Esfahbod <behdad behdad org>
Date:   Thu Aug 22 17:32:58 2013 -0400

    Typo

 README |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/README b/README
index 2a1dd1c..43b6be1 100644
--- a/README
+++ b/README
@@ -18,7 +18,7 @@ set of languages.
 Typelib
 =======
 
-The typelib is a to disk version of the GIR designed to be fast, memory
+The typelib is an on-disk version of the GIR designed to be fast, memory
 efficient and complete enough so that language bindings can be written
 on top of it without other sources of information.
 It is normally compiled from a GIR when a library/program is installed and