Update README.md

README.md

@@ -123,6 +123,8 @@ For all benchmark configs, the `label` field is an integer:
 | `topic` | Fine-grained topic label within the subject. |
 | `comments` | Short proof sketch or rationale explaining the correctness of the label. |
 
+***Please refer to the ([rendered pdf](https://github.com/erchiw/DPriv-Bench/blob/main/cate_2_metadata.pdf)) for a reader-friendly version.***
+
 
 ## Notes