mark two functions as static, fix typo in vty message

diff --git a/src/vty_interface.c b/src/vty_interface.c
index b63c774..a6bfdf2 100644
--- a/src/vty_interface.c
+++ b/src/vty_interface.c
@@ -518,13 +518,13 @@
 	return CMD_SUCCESS;
 }
 
-void paging_dump_vty(struct vty *vty, struct gsm_paging_request *pag)
+static void paging_dump_vty(struct vty *vty, struct gsm_paging_request *pag)
 {
 	vty_out(vty, "Paging on BTS %u%s", pag->bts->nr, VTY_NEWLINE);
 	subscr_dump_vty(vty, pag->subscr);
 }
 
-void bts_paging_dump_vty(struct vty *vty, struct gsm_bts *bts)
+static void bts_paging_dump_vty(struct vty *vty, struct gsm_bts *bts)
 {
 	struct gsm_paging_request *pag;
 
@@ -535,7 +535,7 @@
 DEFUN(show_paging,
       show_paging_cmd,
       "show paging [bts_nr]",
-	SHOW_STR "Display information about pating reuqests of a BTS\n")
+	SHOW_STR "Display information about paging reuqests of a BTS\n")
 {
 	struct gsm_network *net = gsmnet;
 	struct gsm_bts *bts;