docs: fix typo/outdated hook reference (TanStack#2324)

According to the link below, useQueryCache was replaced by
useQueryClient in react-query 3.

https://react-query.tanstack.com/guides/migrating-to-react-query-3#the-usequerycache-hook-has-been-replaced-by-the-usequeryclient-hook

I update the wording here using the wording in useHydrate.md as a
reference.

Author: zrev2220

docs/src/pages/reference/hydration/HydrateComp.md

@@ -3,7 +3,7 @@ id: hydration/HydrateComp
 title: hydration/Hydrate
 ---
 
-`hydration/Hydrate` adds a previously dehydrated state into the `queryClient` that would returned by running `useQueryCache`. If the client already contains data, the new queries will be intelligently merged based on update timestamp.
+`hydration/Hydrate` adds a previously dehydrated state into the `queryClient` that would be returned by `useQueryClient()`. If the client already contains data, the new queries will be intelligently merged based on update timestamp.
 
 ```js
 import { Hydrate } from 'react-query/hydration'