fix some typos

Sponsored-by: On-Waves ehi
diff --git a/include/osmocom/vty/ports.h b/include/osmocom/vty/ports.h
index a58c73b..f4bc485 100644
--- a/include/osmocom/vty/ports.h
+++ b/include/osmocom/vty/ports.h
@@ -11,5 +11,5 @@
 #define OSMO_VTY_PORT_SGSN	4245
 #define OSMO_VTY_PORT_GBPROXY	4246
 #define OSMO_VTY_PORT_BB	4247
-/* 4249-2451 used by control interface */
+/* 4249-4251 used by control interface */
 #define OSMO_VTY_PORT_BTSMGR	4252