Fix code typo (#1773)

Signed-off-by: Daeyoung Kim <[email protected]>

Signed-off-by: Daeyoung Kim <[email protected]>

Author: dy-kim

Sources/ComposableArchitecture/Documentation.docc/Articles/MigratingToTheReducerProtocol.md

@@ -355,7 +355,7 @@ let parentReducer = Reducer<
   .pullback(
     state: \.feature, 
     action: /ParentAction.feature, 
-    environment: { FeatureEnvironment(date: $0.date) }
+    environment: { $0 }
   ),
 
   Reducer { state, action, environment in