fix thor optimizer readme for resnet50

model_zoo/official/cv/resnet_thor/README.md

@@ -79,15 +79,13 @@ sh run_eval_gpu.sh [DATASET_PATH] [CHECKPOINT_PATH]
 ### Script Code Structure
 
 ```shell
-├── model_zoo
-	├──README.md                                      # descriptions about all the models
-	├── resnet_thor
+└── resnet_thor
     ├── README.md                                 # descriptions about resnet_thor
     ├── scripts                     
     │	├── run_distribute_train.sh               # launch distributed training for Ascend
-		│	└── run_eval.sh                           # launch infering for Ascend
+    │	└── run_eval.sh                           # launch inference for Ascend
     │	├── run_distribute_train_gpu.sh           # launch distributed training for GPU
-		│	└── run_eval_gpu.sh                       # launch infering for GPU
+    │	└── run_eval_gpu.sh                       # launch inference for GPU
     ├──src                                  
     │	├── crossentropy.py                       # CrossEntropy loss function
     │	├── config.py                             # parameter configuration