[gjs] build: Replace deprecated AC_CONFIG_HEADER

[Philip Chimento <pchimento src gnome org>]

commit 69447e90f45a5c24dc463d16cb20647803e04333
Author: Philip Chimento <philip chimento gmail com>
Date:   Mon Sep 26 21:52:04 2016 -0700

    build: Replace deprecated AC_CONFIG_HEADER
    
    This macro can be replaced straight up by AC_CONFIG_HEADERS.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=772027

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 5c397d5..db69f78 100644
--- a/configure.ac
+++ b/configure.ac
@@ -13,7 +13,7 @@ AM_INIT_AUTOMAKE([1.11.1 dist-xz no-dist-gzip tar-ustar -Wno-portability])
 AX_IS_RELEASE([git-directory])
 AC_CONFIG_SRCDIR([gjs/console.cpp])
 AC_CONFIG_MACRO_DIR([m4])
-AC_CONFIG_HEADER([config.h])
+AC_CONFIG_HEADERS([config.h])
 
 AC_DEFINE([GJS_VERSION], pkg_int_version, [The gjs version as an integer])