Add getInitialState as part of api utilities (#2729)

docs/apis/create-store.md

@@ -37,8 +37,8 @@ createStore<T>()(stateCreatorFn: StateCreator<T, [], []>): StoreApi<T>
 
 #### Returns
 
-`createStore` returns a vanilla store that exposes API utilities, `setState`, `getState` and
-`subscribe`.
+`createStore` returns a vanilla store that exposes API utilities, `setState`, `getState`,
+`getInitialState` and `subscribe`.
 
 ## Usage
 

docs/apis/create-with-equality-fn.md

@@ -40,10 +40,10 @@ createWithEqualityFn<T>()(stateCreatorFn: StateCreator<T, [], []>, equalityFn?:
 
 #### Returns
 
-`createWithEqualityFn` returns a React Hook with some API utilities, `setState`, `getState`, and
-`subscribe`, attached like `create`. It lets you return data that is based on current state,
-using a selector function, and lets you skip re-renders using an equality function. It should take
-a selector function, and an equality function as arguments.
+`createWithEqualityFn` returns a React Hook with API utilities attached, just like `create`. It
+lets you return data that is based on current state, using a selector function, and lets you skip
+re-renders using an equality function. It should take a selector function, and an equality function
+as arguments.
 
 ### Updating state based on previous state
 

docs/apis/create.md

@@ -37,9 +37,9 @@ create<T>()(stateCreatorFn: StateCreator<T, [], []>): UseBoundStore<StoreApi<T>>
 
 #### Returns
 
-`create` returns a React Hook with some API utilities, `setState`, `getState`, and `subscribe`,
-attached. It lets you return data that is based on current state, using a selector function. It
-should take a selector function as its only argument.
+`create` returns a React Hook with API utilities, `setState`, `getState`, `getInitialState` and
+`subscribe`, attached. It lets you return data that is based on current state, using a selector
+function. It should take a selector function as its only argument.
 
 ## Usage