readme update for different services

README.md

@@ -7,6 +7,6 @@ TLDR: this assignment is mostly a demo of the autograding infrastructure. All yo
 - put your email address in `student.json`
 - update your email address in `main.ts` so that "website of (your email address)" shows up in the web page
 - deploy your website to the web, using the service of your choice
-  - Cloudflare Pages, Netlify, and Vercel are good choices; GitHub Pages is ok too.
+  - Cloudflare Pages and Render are our official recommendations, but anything that is available on the Internet is fine.
 - put the URL for your deployed website in `student.json`
 - don't introduce any type errors, lint errors or warnings, or format errors