vty: Fix cpu-sched VTY node name

Durin dev cycle, node was initially called "sched" instead of
"cpu-sched", and when it was renamed, this specific part was missed.

Change-Id: I0709fee12cc8ddc4d57efb4ea40b0b79b7ea4151
diff --git a/src/vty/cpu_sched_vty.c b/src/vty/cpu_sched_vty.c
index 8cd11fe..f608738 100644
--- a/src/vty/cpu_sched_vty.c
+++ b/src/vty/cpu_sched_vty.c
@@ -82,7 +82,7 @@
 
 static struct cmd_node sched_node = {
 	L_CPU_SCHED_NODE,
-	"%s(config-sched)# ",
+	"%s(config-cpu-sched)# ",
 	1,
 };