[rygel] build: Fix typo

[Jens Georg <jensgeorg src gnome org>]

commit 9a2a02b99ae47fc0e6c95a6b164ae5530725f7dc
Author: Jens Georg <mail jensge org>
Date:   Sun Aug 19 12:28:07 2012 +0200

    build: Fix typo

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index e4effb5..d7996a0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -221,7 +221,7 @@ AS_IF([test "x$enable_valadoc" != "xno"], [
     AS_IF([test -x "$VALADOC"], [
       found_valadoc=yes
       AC_SUBST(VALADOC)
-      PKG_CHECK_MODULES([GTKDOCK],[gtk-doc >= 1.0])
+      PKG_CHECK_MODULES([GTKDOC],[gtk-doc >= 1.0])
     ], [
       AS_IF([test "x$enable_valadoc" == "xyes"], AC_MSG_ERROR([Unable to find valadoc]))
     ])