Update file utils.py

utils.py

@@ -343,7 +343,7 @@ def prepare_dataframe(df, args):
 
     species_list = df.groupby('species').size().sort_values(
         ascending=False).reset_index()
-    species_list.columns = ['specie', 'number']
+    species_list.columns = ['species', 'number']
 
     df['d_annot'] = df.stop - df.start
     df['midl'] = (df.stop + df.start) / 2