MC6 thermostat: fix copy-paste error.

custom_components/tuya_local/devices/brade_mc6_thermostat.yaml

@@ -186,7 +186,7 @@ secondary_entities:
             constraint: unit
             conditions:
               - dps_val: f
-                value_redirect: max_temp_f
+                value_redirect: min_temp_f
                 range:
                   min: 410
                   max: 1220