docs(changelog): update CHANGELOG.md

CHANGELOG.md

@@ -6,4 +6,9 @@ pi0_datasets_v0.1.0 (2026-1-27)
 
 pi0_datasets_v0.2.0 (2026-2-2)
 ------------------
-1. Add hdf5 datasets for task: pi0 put the yellow mango_on the blue plate.
+1. Add hdf5 datasets for task: put the yellow mango_on the blue plate.
+
+pi0_datasets_v0.2.1 (2026-2-2)
+------------------
+1. Add lerobot datasets for task: put the box.
+1. Add lerobot datasets for task: put the yellow mango_on the blue plate.