chore: update browser readme

Author: sheremet-va

packages/browser/README.md

@@ -1,33 +1,19 @@
 # @vitest/browser
 
-Browser runner for Vitest.
+[Browser runner](https://vitest.dev/guide/browser/) for Vitest.
 
 > ⚠️ This package is **experimental**. While this package will be released along with other packages, it will not follow SemVer for breaking changes until we mark it as ready.
 
-## Progress
-
-Current Status: **Working in progress**
-
-- [x] Init package and integration
-- [x] Stub node packages for Vitest runtime
-- [x] Works in development mode
-- [x] Better log in terminal
-- [x] Fulfill tests (using Browser only APIs, Vue and React components)
-- [ ] Show progress and error on the browser page
-- [x] Headless mode in CI
-- [x] Docs
-
-Related PRs
-
-- [#1302](https://github.com/vitest-dev/vitest/pull/1302)
-
 ## Development Setup
 
 At project root:
 
 ```bash
-pnpm dev
-
 cd test/browser
-pnpm vitest --browser
+# runs relevant tests for the browser mode
+# useful to confirm everything works fine
+pnpm test
+# runs tests as the browser mode
+# useful during development
+pnpm test-fixtures
 ```