minor fix

speciesData.py

@@ -62,7 +62,7 @@ class SpeciesData:
 
         self.date = datetime.today().strftime("%Y-%m-%d")
         self.origin = parameters_dictionary_description[constants.ORG_PARAM_DESC_ORIGIN]
-        self.performed = parameters_dictionary_data[constants.constants.ORG_PARAM_DATA_PERFORMED_BY]
+        self.performed = parameters_dictionary_data[constants.ORG_PARAM_DATA_PERFORMED_BY]
 
         if parameters_dictionary_data[constants.ORG_PARAM_DATA_GENOME_VERSION] == "":
             self.genome_version = "1.0"