Update the changelog. [ci skip]

CHANGELOG.md

@@ -9,6 +9,7 @@ Fixes
 - Set standard format for options_lookup ([#962](https://github.com/NREL/resstock/pull/962))
 - Model a wood storage water heater when "Other Fuel" is sampled from Water Heater Efficiency.tsv (allowing downstream modeling of clothes washer/dryer). Similarly, model a wood wall/floor furnace when "Other" is sampled from HVAC Heating Efficiency.tsv ([#947](https://github.com/NREL/resstock/pull/947))
 - Update ResStockArguments to support nonzero fraction of heat load served by the secondary heating system ([#1090](https://github.com/NREL/resstock/pull/1090))
+- Fix square footage for a MF dwelling unit in the "3000-3999" CFA bin (from 33171 to 3171) ([#1115](https://github.com/NREL/resstock/pull/1115))
 
 ## ResStock v3.1.0
 ###### May 25, 2023 - [Diff](https://github.com/NREL/resstock/compare/v3.0.0...v3.1.0)