[libgdata] docs: Fix a typo in README

[Philip Withnall <pwithnall src gnome org>]

commit bba5887ad817439b01ffa80482405effd7be5bbf
Author: Philip Withnall <philip tecnocode co uk>
Date:   Fri Jul 29 22:21:34 2011 +0100

    docs: Fix a typo in README

 README |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/README b/README
index c3dd09e..6e3bfac 100644
--- a/README
+++ b/README
@@ -25,7 +25,7 @@ If compiling with --enable-gnome (for GNOME support):
 Environment variables
 =====================
 
-If the environment variable LIGDATA_DEBUG is set to one of the following
+If the environment variable LIBGDATA_DEBUG is set to one of the following
 values, libgdata will give debug output (at various levels):
  0: Output no debug messages or network logs
  1: Output debug messages, but not network logs