Fix some typos in stdout output

Change-Id: I0dbb438f3bfbaf9744717cbeec31ceefdd679ee9
Related: OS#1694
diff --git a/openbsc/src/libbsc/abis_om2000_vty.c b/openbsc/src/libbsc/abis_om2000_vty.c
index 27b1947..adad479 100644
--- a/openbsc/src/libbsc/abis_om2000_vty.c
+++ b/openbsc/src/libbsc/abis_om2000_vty.c
@@ -394,7 +394,7 @@
 
 DEFUN(cfg_bts_is_conn_list, cfg_bts_is_conn_list_cmd,
 	"is-connection-list (add|del) <0-2047> <0-2047> <0-255>",
-	"Interface Switch Connnection List\n"
+	"Interface Switch Connection List\n"
 	"Add to IS list\n" "Delete from IS list\n"
 	"ICP1\n" "ICP2\n" "Contiguity Index\n")
 {