docs: add missing word (#56547)

small typo




Co-authored-by: Lee Robinson <9113740+leerob@users.noreply.github.com>

docs/02-app/01-building-your-application/03-rendering/02-client-components.mdx

@@ -91,7 +91,7 @@ Then, on the client:
 
 > **What is hydration?**
 >
-> Hydration is process of attaching event listeners to the DOM, to make the static HTML interactive. Behind the scenes, hydration is done with the [`hydrateRoot`](https://react.dev/reference/react-dom/client/hydrateRoot) React API.
+> Hydration is the process of attaching event listeners to the DOM, to make the static HTML interactive. Behind the scenes, hydration is done with the [`hydrateRoot`](https://react.dev/reference/react-dom/client/hydrateRoot) React API.
 
 ### Subsequent Navigations