Revert "Update default out folder" (#1340)

Revert "docs: update default `out` folder (#1337)"

This reverts commit 1be562e.

Author: DaniPopes

src/reference/config/project.md

@@ -29,7 +29,7 @@ The path to the script contract sources relative to the root of the project.
 ##### `out`
 
 - Type: string
-- Default: artifacts
+- Default: out
 - Environment: `FOUNDRY_OUT` or `DAPP_OUT`
 
 The path to put contract artifacts in, relative to the root of the project.