Typo: reducer -> reducers

Sources/ComposableArchitecture/Documentation.docc/Tutorials/BuildingSyncUps/07-SyncUpDetailNavigation/SyncUpDetailNavigation.tutorial

@@ -36,7 +36,7 @@
       @Step {
         Integrate the `SyncUpsList` reducer into the `AppReducer` by holding onto its state and
         actions, and using the ``ComposableArchitecture/Scope`` reducer to compose the two
-        reducer together.
+        reducers together.
 
         @Code(name: "App.swift", file: SyncUpDetailNavigation-01-code-0002.swift)
       }