fix relative import

biosses.py

@@ -26,10 +26,10 @@ loader uses a version that privides the same data in text format.
 import datasets
 import pandas as pd
 
-from bigbiohub import pairs_features
-from bigbiohub import BigBioConfig
-from bigbiohub import Lang, Tasks
-from bigbiohub import Licenses
+from .bigbiohub import pairs_features
+from .bigbiohub import BigBioConfig
+from .bigbiohub import Lang, Tasks
+from .bigbiohub import Licenses
 
 
 _DATASETNAME = "biosses"