chore: normalize tsfile dataset metadata

README.md

@@ -12,23 +12,25 @@ task_categories:
 - time-series-forecasting
 task_ids:
 - univariate-time-series-forecasting
+- multivariate-time-series-forecasting
 tags:
-- time-series
 - forecasting
 - benchmark
 - monash-time-series-forecasting-repository
 - monash-tsf
+- language_creators:found
 - tsfile
-- apache-tsfile
 - modality:timeseries
-- Time-series
-- format:tsfile
 pretty_name: temperature_rain (TsFile format)
 configs:
 - config_name: default
   data_files:
   - split: train
     path: "*.tsfile"
+modality:
+- timeseries
+size_categories:
+- 1K<n<10K
 ---
 
 # temperature_rain (TsFile format)