docs: fix incorrect word in getting started docs (#3895)

docs/guide/index.md

@@ -109,7 +109,7 @@ export default defineConfig({
 Even if you do not use Vite yourself, Vitest relies heavily on it for its transformation pipeline. For that reason, you can also configure any property described in [Vite documentation](https://vitejs.dev/config/).
 :::
 
-If you are already using Vite, add `test` property in your Vite config. You'll also need to add a reference to Vitest types using a [triple slash command](https://www.typescriptlang.org/docs/handbook/triple-slash-directives.html#-reference-types-) at the top of your config file.
+If you are already using Vite, add `test` property in your Vite config. You'll also need to add a reference to Vitest types using a [triple slash directive](https://www.typescriptlang.org/docs/handbook/triple-slash-directives.html#-reference-types-) at the top of your config file.
 
 ```ts 
 /// <reference types="vitest" />