docs: Update typescript.md for registering types (#6272)

To ensure comprehensive documentation, I have included the import declaration to ensure that everyone is aware that the import is necessary for the module augmentation to function properly.

If you omit the import, you will overwrite the entire react-query declaration.

Author: sandergo90

docs/react/typescript.md

@@ -137,6 +137,8 @@ TanStack Query v5 allows for a way to set a global Error type for everything, wi
 [//]: # 'RegisterErrorType'
 
 ```tsx
+import '@tanstack/react-query';
+
 declare module '@tanstack/react-query' {
   interface Register {
     defaultError: AxiosError
@@ -160,6 +162,8 @@ const { error } = useQuery({ queryKey: ['groups'], queryFn: fetchGroups })
 Similarly to registering a [global error type](#registering-a-global-error) you can also register a global `Meta` type. This ensures the optional `meta` field on [queries](./reference/useQuery.md) and [mutations](./reference/useMutation.md) stays consistent and is type-safe.
 
 ```ts
+import '@tanstack/react-query';
+
 declare module '@tanstack/react-query' {
   interface Register {
     queryMeta: MyMeta,