Step by step / Creating instances / In practice - Link to legacy sample project

[MrDixioner]

This section contains a link to the sample project for engine version 3.x. When you open it in version 4, a project conversion window appears, which can be confusing for beginners. You need to replace the project reference for version 4.
Project link: instancing.zip

[Piralein]

duplicate of #6564

[skyace65]

Fixed by godotengine/godot-docs-project-starters#3