docs: change entity-component-model to entity-component-system

en/manual/engine/index.md

@@ -4,7 +4,7 @@
 >This section is out of date. For now, you should only use it for reference.
 
 - [Asset](assets/index.md)
-- [Entity-component model](entity-component-model/index.md)
+- [Entity-component model](entity-component-system/index.md)
 - [File system](file-system.md)
 
 # See also

en/manual/index.md

@@ -13,7 +13,7 @@ These pages contain information about how to use Stride, an open-source C# game
 - <span class="badge text-bg-info">Updated</span> [Linux - Setup and requirements](platforms/linux/setup-and-requirements.md) - Fedora OS option added
 - <span class="badge text-bg-success">New</span> [Scripts - Serialization](scripts/serialization.md) - Serialization explained
 - <span class="badge text-bg-info">Updated</span> [Scripts - Public properties and fields](scripts/public-properties-and-fields.md) - Content improvements and additions
-- <span class="badge text-bg-success">New</span> [Engine - Entity Component model - Usage](engine/entity-component-model/usage.md) - ECS usage explained
+- <span class="badge text-bg-success">New</span> [Engine - Entity Component model - Usage](engine/entity-component-system/usage.md) - ECS usage explained
 - <span class="badge text-bg-info">Updated</span> [Engine - Entity Component model](engine/entity-component-model/index.md) - Content improvements
 - <span class="badge text-bg-info">Updated</span> [Stride for Unity® developers](stride-for-unity-developers/index.md) - Content improvements