docs(cli): suggest --run flag when using vitest related with `lin…

…t-staged` (#2704)

Co-authored-by: Vladimir Sheremet <sleuths.slews0s@icloud.com>

docs/guide/cli.md

@@ -40,6 +40,17 @@ Useful to run with [`lint-staged`](https://github.com/okonet/lint-staged) or wit
 vitest related /src/index.ts /src/hello-world.js
 ```
 
+::: tip
+Don't forget that Vitest runs with enabled watch mode by default. If you are using tools like `lint-staged`, you  should also pass `--run` option, so that command can exit normally.
+
+```js
+// .lintstagedrc.js
+export default {
+  '*.{js,ts}': 'vitest related --run',
+}
+```
+:::
+
 ## Options
 
 | Options       |               |