Update README.md

README.md

@@ -43,7 +43,7 @@ The dataset is divided into several subsets based on the distribution of object
 | Hom. | 490 | 289 | 201 |
 | Adv. | 334 | 170 | 164 |
 
-### Dataset Description
+### Dataset Structure
 
 <!-- Provide a longer summary of what this dataset is. -->
 
@@ -174,7 +174,7 @@ The dataset is divided into several subsets based on the distribution of object
   ]
 }
 
-
+```
 
 ## Dataset Structure