fix: add option to use corrected dataset

multi_omics_transcript_expression.py

@@ -306,8 +306,8 @@ class TranscriptExpressionHandler(GenomicLRATaskHandler):
                 "transcript_expression/GTEx_v1_multiomics.csv"
             )
         elif self.expression_method == "read_counts":
-            raise NotImplementedError(
-                "Needs the dataset"
+            self.df_csv_file = dl_manager.download_and_extract(
+                "transcript_expression/GTEx_read_counts_multiomics.csv"
             )
 
         return super().split_generators(dl_manager, cache_dir_root)