modify shell for check

examples/images/dreambooth/test_ci.sh

@@ -8,7 +8,7 @@ DIFFUSERS_OFFLINE=1
 
 #  "torch_ddp" "torch_ddp_fp16"
 for plugin in "low_level_zero" "gemini"; do
-  torchrun --nproc_per_node 8 --standalone train_dreambooth_colossalai.py \
+  torchrun --nproc_per_node 4 --standalone train_dreambooth_colossalai.py \
   --pretrained_model_name_or_path="/data/dreambooth/diffuser/stable-diffusion-v1-4"  \
   --instance_data_dir="/data/dreambooth/Teyvat/data" \
   --output_dir="./weight_output" \