docs: Add missing closing tag for react hydration error message. (ver…

…cel#52607)

errors/react-hydration-error.mdx

@@ -14,7 +14,7 @@ Hydration errors can occur from:
 
 1. Incorrect nesting of HTML tags
    1. `<p>` nested in another `<p>` tag
-   2. `<div` nested in a `<p>` tag
+   2. `<div>` nested in a `<p>` tag
 2. Using checks like `typeof window !== 'undefined'` in your rendering logic
 3. Using browser-only APIs like `window` or `localStorage` in your rendering logic
 4. [Browser extensions](https://github.com/facebook/react/issues/24430) modifying the HTML