Update quick_start.md

docs/zh_CN/tutorials/quick_start.md

@@ -72,7 +72,7 @@ cd ../
 ```shell
 export CUDA_VISIBLE_DEVICES=0
 python -m paddle.distributed.launch \
-    --selected_gpus="0" \
+    --gpus="0" \
     tools/train.py \
         -c ./configs/quick_start/ResNet50_vd.yaml
 
@@ -90,7 +90,7 @@ python -m paddle.distributed.launch \
 ```shell
 export CUDA_VISIBLE_DEVICES=0
 python -m paddle.distributed.launch \
-    --selected_gpus="0" \
+    --gpus="0" \
     tools/train.py \
         -c ./configs/quick_start/ResNet50_vd_finetune.yaml
 
@@ -118,7 +118,7 @@ pretrained_model: "./pretrained/ResNet50_vd_ssld_pretrained"
 ```shell
 export CUDA_VISIBLE_DEVICES=0
 python -m paddle.distributed.launch \
-    --selected_gpus="0" \
+    --gpus="0" \
     tools/train.py \
         -c ./configs/quick_start/ResNet50_vd_ssld_finetune.yaml
 ```
@@ -133,7 +133,7 @@ python -m paddle.distributed.launch \
 ```shell
 export CUDA_VISIBLE_DEVICES=0
 python -m paddle.distributed.launch \
-    --selected_gpus="0" \
+    --gpus="0" \
     tools/train.py \
         -c ./configs/quick_start/MobileNetV3_large_x1_0_finetune.yaml
 ```
@@ -149,7 +149,7 @@ python -m paddle.distributed.launch \
 ```shell
 export CUDA_VISIBLE_DEVICES=0
 python -m paddle.distributed.launch \
-    --selected_gpus="0" \
+    --gpus="0" \
     tools/train.py \
         -c ./configs/quick_start/ResNet50_vd_ssld_random_erasing_finetune.yaml
 ```
@@ -188,7 +188,7 @@ TRAIN:
 ```shell
 export CUDA_VISIBLE_DEVICES=0
 python -m paddle.distributed.launch \
-    --selected_gpus="0" \
+    --gpus="0" \
     tools/train.py \
         -c ./configs/quick_start/R50_vd_distill_MV3_large_x1_0.yaml
 ```