build: Fix a small typo in configure.ac

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
diff --git a/configure.ac b/configure.ac
index 2eba12a..59d01cf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -61,7 +61,7 @@
 XORG_DEFAULT_OPTIONS
 
 # warning flags for the assembler. We can't quite use CWARNFLAGS for it yet as
-# it generates waaaay to many warnings.
+# it generates waaaay too many warnings.
 ASSEMBLER_WARN_CFLAGS=""
 if test "x$GCC" = "xyes"; then
 	ASSEMBLER_WARN_CFLAGS="-Wall -Wstrict-prototypes \