Update IRR in addons CSV test

Author: softwareengineerprogrammer

tests/example1_addons.csv

@@ -11,7 +11,7 @@ ECONOMIC PARAMETERS,Accrued financing during construction,,0.0,
 ECONOMIC PARAMETERS,Project lifetime,,30,yr
 ECONOMIC PARAMETERS,Capacity factor,,90.0,%
 ECONOMIC PARAMETERS,Project NPV,,-6.29,MUSD
-ECONOMIC PARAMETERS,Project IRR,,0.04,%
+ECONOMIC PARAMETERS,Project IRR,,4.48,%
 ECONOMIC PARAMETERS,Project VIR=PI=PIR,,0.81,
 ECONOMIC PARAMETERS,Project MOIC,,3.47,
 ECONOMIC PARAMETERS,Fixed Charge Rate (FCR),,5.0,