Update 2025-07-16-br-local-dev.mdx

update wording to better explain usefulness of local dev

Author: kathayl

src/content/changelog/browser-rendering/2025-07-16-br-local-dev.mdx

@@ -6,7 +6,7 @@ products:
 date: 2025-07-16T16:00:00Z
 ---
 
-You can now test your Browser Rendering apps locally before deploying using `npx wrangler dev`. Local development support makes it easier to develop, debug, and iterate before deploying to Cloudflare's global network.
+You can now run your Browser Rendering locally using `npx wrangler dev`, which spins up a browser directly on your machine before deploying to Cloudflare's global network. By running testing locally, you can quickly develop, debug, and test changes without needing to deploy or worry about usage costs. 
 
 ![Local Dev video](~/assets/images/browser-rendering//localshorterbrowserrendering.gif)