Update faq.mdx

added new FAQ about users not having proper paid entitlement until they redeploy the worker

Author: kathayl

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

@@ -78,3 +78,7 @@ Not yet. Local development currently has the following limitations:
 - Playwright is not supported in local development environments.
 
 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.