[Fix] deepspeed example shell command path for host.txt (#5001)

Author: dykderrick

examples/train/multi-node/deepspeed/train.sh

@@ -1,6 +1,6 @@
 # If your need only a part of the GPUs in every node, try:
 # --include="worker-0:0,1@worker-1:2,3"
-deepspeed --hostfile=./examples/train/multi-node-deepspeed/host.txt \
+deepspeed --hostfile=./examples/train/multi-node/deepspeed/host.txt \
     swift/cli/sft.py \
     --model Qwen/Qwen2.5-7B-Instruct \
     --train_type lora \