add more typescript tips

ts project need more ts tips

```js
export function sortableContainer

(
wrappedComponent: WrappedComponent

,
config?: Config,
): React.ComponentClass

;

export function sortableElement

(
wrappedComponent: WrappedComponent

,
config?: Config,
): React.ComponentClass

;

export function sortableHandle

(
wrappedComponent: WrappedComponent

,
config?: Config,
): React.ComponentClass

;

```

The issue provides TypeScript declaration examples for sortableContainer, sortableElement, and sortableHandle, but names no file, documentation page, or test. Start by locating the project's TypeScript documentation or declaration examples; done means adding the requested tips in the appropriate location and verifying the examples remain accurate.

Written by the indexing model from the issue text.