libsysfs: fix Config.in help text indentation

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libsysfs/Config.in

@@ -4,4 +4,4 @@ config BR2_PACKAGE_LIBSYSFS
 	  These are a set of utilities built upon sysfs, a filesystem in
 	  Linux 2.6 kernels that exposes a system's device tree.
 
-	http://linux-diag.sourceforge.net/Sysfsutils.html
+	  http://linux-diag.sourceforge.net/Sysfsutils.html