Update simple_storage.py

Author: JMGilbert

src/dscim/menu/simple_storage.py

@@ -37,7 +37,7 @@ class Climate:
         Period for rebasing FAIR temperature anomalies. This should match the CIL projection system's base period.
     emission_scenarios: list or None, optional
         List of emission scenarios for which SCC will be calculated. Default
-        is ["ssp119", "ssp126", "ssp245", "ssp460", "ssp370", "ssp585"].
+        is (), which gets set to ["ssp119", "ssp126", "ssp245", "ssp460", "ssp370", "ssp585"].
     gases: list or None, optional
         List of greenhouse gases for which SCC will be calculated. Default is
         ["CO2_Fossil", "CH4", "N2O"].