Corrects typo (#16956)

src/content/docs/speed/optimization/content/speed-brain.mdx

@@ -61,7 +61,7 @@ This configuration instructs the browser to initiate prefetch requests for futur
 
 To test that Speed Brain is enabled, you can check that your HTTP response headers for your web pages include the `Speculation-Rules` header. However, note that during the beta phase of Speed Brain, this behavior might not be 100% consistent.
 
-To test whether your browser is making prefetch requests, open the **Network** tab in Chrome DevTools. Then, mouse-down on a link on a webpage with Speed Brain enabled. This action should initiate a prefetch request, which will be  visible in the **Network** tab. However, note that there are several reasons why the browser might choose not to initiate a prefetch. Refer to the [Chrome Limits guide](https://developer.chrome.com/docs/web-platform/prerender-pages#chrome-limits) for more details. For more general information about debugging Speculation, refer to the [Chrome Speculation Debugging guide](https://developer.chrome.com/docs/devtools/application/debugging-speculation-rules).
+To test whether your browser is making prefetch requests, open the **Network** tab in Chrome DevTools. Then, mouse-down on a link on a webpage with Speed Brain enabled. This action should initiate a prefetch request, which will be  visible in the **Network** tab. However, note that there are several reasons why the browser might choose not to initiate a prefetch. Refer to the [Chrome Limits guide](https://developer.chrome.com/docs/web-platform/prerender-pages#chrome-limits) for more details. For more general information about debugging Speculation-Rules, refer to the [Chrome Speculation Debugging guide](https://developer.chrome.com/docs/devtools/application/debugging-speculation-rules).
 
 ## RUM integration