Formatted the dataset description in README

README.md

@@ -798,7 +798,10 @@ dataset_info:
 
 TID-8 is a new benchmark focused on the task of letting models learn from data that has inherent disagreement.
 
-Annotation Split:
+---
+
+**Annotation Split**
+
 We split the annotations for each annotator into train and test set.
 
 In other words, the same set of annotators appear in both train, (val),
@@ -812,7 +815,10 @@ For datasets that do not have splits originally, we split the data into
 train and test set for convenience, you may further split the train set
 into a train and val set.
 
-Annotator Split:
+---
+
+**Annotator Split**
+
 We split annotators into train and test set.
 
 In other words, a different set of annotators would appear in train and test sets.