docs: separate dot from hyperlink (#6140)

Author: jjm2317

src/content/reference/react-dom/index.md

@@ -39,5 +39,5 @@ These APIs will be removed in a future major version of React.
 * [`findDOMNode`](/reference/react-dom/findDOMNode) finds the closest DOM node corresponding to a class component instance.
 * [`hydrate`](/reference/react-dom/hydrate) mounts a tree into the DOM created from server HTML. Deprecated in favor of [`hydrateRoot`](/reference/react-dom/client/hydrateRoot).
 * [`render`](/reference/react-dom/render) mounts a tree into the DOM. Deprecated in favor of [`createRoot`](/reference/react-dom/client/createRoot).
-* [`unmountComponentAtNode`](/reference/react-dom/unmountComponentAtNode) unmounts a tree from the DOM. Deprecated in favor of [`root.unmount()`.](/reference/react-dom/client/createRoot#root-unmount)
+* [`unmountComponentAtNode`](/reference/react-dom/unmountComponentAtNode) unmounts a tree from the DOM. Deprecated in favor of [`root.unmount()`](/reference/react-dom/client/createRoot#root-unmount).