chore: update repo setup instruction in CONTRIBUTING.md (#6729)

CONTRIBUTING.md

@@ -15,11 +15,13 @@ To develop and test `vitest` package:
 
 1. Run `pnpm install` in `vitest`'s root folder
 
-2. Run `pnpm run dev` to build sources in watch mode
+2. Run `pnpm run build` to build all monorepo packages
+  - after this, you can use `pnpm run dev` to rebuild packages as you modify code
 
 3. Run
    - `pnpm run test` to run core tests
-   - `pnpm run test:all` to run all the suite
+   - `pnpm run test:ci` to run all the suite
+   - `cd test/(dir) && pnpm run test` to run a specific test suite
 
 > 💡 If you use VS Code, you can hit `⇧ ⌘ B` or `Ctrl + Shift + B` to launch all the necessary dev tasks.
 

package.json

@@ -9,7 +9,7 @@
     "node": "^18.0.0 || >=20.0.0"
   },
   "scripts": {
-    "ci": "ni && nr typecheck && nr lint && nr build && nr test:all",
+    "ci": "ni && nr typecheck && nr lint && nr build && nr test:ci",
     "ci:docs": "pnpm run build && pnpm run docs:build",
     "build": "pnpm -r --filter @vitest/ui --filter='./packages/**' run build",
     "dev": "NODE_OPTIONS=\"--max-old-space-size=8192\" pnpm -r --parallel --filter='./packages/**' run dev",