Update README.md

Author: licksylick

README.md

@@ -20,7 +20,7 @@ Otherwise, the processor will be used.
 
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 ### 2. Dataset structure
-Directory with 2 subdirectories: `tran_val` with the number of subdirectories equal to num classes and `test` with the number of subdirectories equal to num classes:  
+Directory with 2 subdirectories: `train_val` with the number of subdirectories equal to num classes and `test` with the number of subdirectories equal to num classes:  
 dataset  
  ~~~~
     dataset