Fix import paths in swr-openapi docs (#2233)

* Update use-immutable.md

* Update use-infinite.md

Author: kaykayehnn

docs/swr-openapi/use-immutable.md

@@ -8,7 +8,7 @@ This hook has the same contracts as [`useQuery`](./use-query.md). However, inste
 
 ```ts
 import createClient from "openapi-fetch";
-import { createQueryHook } from "swr-openapi";
+import { createImmutableHook } from "swr-openapi";
 import type { paths } from "./my-schema";
 
 const useImmutable = createImmutableHook(client, "my-api");

docs/swr-openapi/use-infinite.md

@@ -8,7 +8,7 @@ This hook is a typed wrapper over [`useSWRInfinite`][swr-infinite].
 
 ```ts
 import createClient from "openapi-fetch";
-import { createQueryHook } from "swr-openapi";
+import { createInfiniteHook } from "swr-openapi";
 import type { paths } from "./my-schema";
 
 const client = createClient<paths>(/* ... */);