fix: incorrect import name for postsApi in authSlice

Author: kaylakremer

examples/query/react/kitchen-sink/src/features/auth/authSlice.ts

@@ -1,5 +1,5 @@
 import { createSlice } from '@reduxjs/toolkit'
-import { postApi } from '../../app/services/posts'
+import { postsApi } from '../../app/services/posts'
 import type { User } from '../../app/services/posts'
 import type { RootState } from '../../app/store'