Docs (quick win): FastStore CLI link (#2213)

## What's the purpose of this pull request?

Quick fix on link mentioning FastStore CLI.

apps/site/pages/docs/getting-started/3-project-structure.mdx

@@ -72,4 +72,4 @@ Defines the project's metadata and handles dependencies and scripts using [Yarn]
 Bundles FastStore source code, including the FatsStore starter: `starter store`. It contains four sub-packages, `Components`, `SDK`, `UI` and `API`, which handle the starter.
 
 #### `@faststore/cli` 
-Provides scripts for building, running, debugging, and deploying your FastStore project. This package helps with debugging and differentiating between VTEX code and customizations. To learn more, refer to the [FastStore CLI documentation](/docs/getting-started/faststore-cli).
+Provides scripts for building, running, debugging, and deploying your FastStore project. This package helps with debugging and differentiating between VTEX code and customizations. To learn more, refer to the [FastStore CLI documentation](/docs/getting-started/4-faststore-cli).