configure: Fix default value of --without-numa switch in help

The default value is no.

Fixes: 39a85a1 ("configure: add knob to control numa support")

Signed-off-by: Petr Vorel <pvorel@suse.cz>

configure.ac

@@ -86,7 +86,7 @@ fi
 # Numa
 AC_ARG_WITH([numa],
   AC_HELP_STRING([--without-numa],
-    [without numa support (default=yes)]),
+    [without numa support (default=no)]),
   [with_numa=no],
   [with_numa=yes]
 )