Update faq.mdx (cloudflare#23687)

* Update faq.mdx

new FAQ Q: Why is my screenshot blurry?

* Update src/content/docs/browser-rendering/faq.mdx

Co-authored-by: ToriLindsay <[email protected]>

---------

Co-authored-by: ToriLindsay <[email protected]>

Author: kathayl

src/content/docs/browser-rendering/faq.mdx

@@ -82,3 +82,7 @@ For full feature access, use `npx wrangler dev --remote`.
 ### I upgraded from the Workers Free plan, but I'm still hitting the 10-minute per day limit. What should I do?
 
 If you recently upgraded to the Workers Paid plan to increase your Browser Rendering usage limits, but you're still encountering the 10-minute per day cap, try redeploying your Worker. This ensures your usage is correctly associated with your new plan.
+
+### Why is my screenshot blurry?
+
+If your screenshot is blurry, it may be because you increased the height and width of the viewport. To fix this, increase the value of the `deviceScaleFactor` (default is 1).