Update components-and-hooks-must-be-pure.md (#7245)

Author: Sanderand

src/content/reference/rules/components-and-hooks-must-be-pure.md

@@ -194,7 +194,7 @@ function ProductDetailPage({ product }) {
 }
 ```
 
-One way to achieve the desired result of updating `window.title` outside of render is to [synchronize the component with `window`](/learn/synchronizing-with-effects).
+One way to achieve the desired result of updating `document.title` outside of render is to [synchronize the component with `document`](/learn/synchronizing-with-effects).
 
 As long as calling a component multiple times is safe and doesn’t affect the rendering of other components, React doesn’t care if it’s 100% pure in the strict functional programming sense of the word. It is more important that [components must be idempotent](/reference/rules/components-and-hooks-must-be-pure).