docs: update dataset card with usage

README.md

@@ -2,31 +2,36 @@
 license: unknown
 task_categories:
 - graph-ml
-tags:
-- chemistry
 configs:
 - config_name: transductive
   data_files:
   - split: train
-    path: "processed/transductive/train_df.csv"
+    path: processed/transductive/train_df.csv
   - split: valid
-    path: "processed/transductive/val_df.csv"
+    path: processed/transductive/val_df.csv
   - split: test
-    path: "processed/transductive/test_df.csv"
+    path: processed/transductive/test_df.csv
 - config_name: inductive
   data_files:
   - split: train
-    path: "processed/inductive/train_df.csv"
+    path: processed/inductive/train_df.csv
   - split: valid
-    path: "processed/inductive/val_df.csv"
+    path: processed/inductive/val_df.csv
   - split: test
-    path: "processed/inductive/test_df.csv"
+    path: processed/inductive/test_df.csv
 - config_name: raw
-  data_files: "raw/*.txt"
+  data_files: raw/*.txt
 ---
 
 Source Paper: https://arxiv.org/abs/1802.06916
 
+### Usage
+```
+from torch_geometric.datasets.cornell import CornellTemporalHyperGraphDataset
+
+dataset = CornellTemporalHyperGraphDataset(root = "./", name="email-Eu-25", split="train")
+```
+
 ### Citation
 
 ```misc