package/libpam-nfc: fix typo in help text

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libpam-nfc/Config.in

@@ -2,6 +2,6 @@ config BR2_PACKAGE_LIBPAM_NFC
 	bool "libpam-nfc"
 	select BR2_PACKAGE_LIBNFC
 	help
-	  NFC-based PAM authentification module.
+	  NFC-based PAM authentication module.
 
 	  https://github.com/nfc-tools/pam_nfc