fix sh bug (#381)

Author: Jintao-Huang

examples/pytorch/llm/scripts/cogagent_18b_chat/lora/sft.sh

@@ -15,7 +15,7 @@ swift sft \
     --lora_rank 8 \
     --lora_alpha 32 \
     --lora_dropout_p 0.05 \
-    --lora_target_modules DEFULAT \
+    --lora_target_modules DEFAULT \
     --gradient_checkpointing false \
     --batch_size 1 \
     --weight_decay 0.01 \