chore: normalize tsfile dataset metadata

README.md

@@ -5,7 +5,7 @@ task_categories:
 tags:
 - LeRobot
 - robotics
-- time-series
+- timeseries
 - tsfile
 modality: timeseries
 pretty_name: aloha_static_fork_pick_up TsFile
@@ -14,6 +14,8 @@ configs:
   data_files:
   - split: train
     path: data/aloha_static_fork_pick_up.tsfile
+size_categories:
+- 10K<n<100K
 ---
 
 # aloha_static_fork_pick_up TsFile