Fix loading scenes (#70)

Co-authored-by: VAILLANT Jeremy <vaillant.jeremy@dev-crea.com>
Reviewed-on: Athena/game-source#70
Co-authored-by: darknight <vaillant.jeremy@dev-crea.com>
Co-committed-by: darknight <vaillant.jeremy@dev-crea.com>

scenes/levels/warcraft/WarCraft.gd

@@ -1,4 +1,4 @@
-extends "res://scenes/levels/levels.gd"
+extends "res://scenes/levels/Levels.gd"
 
 export (PackedScene) var object_first = load("res://scenes/UI/list_ho/ObjectListFirst.tscn")
 export (PackedScene) var object_std = load("res://scenes/UI/list_ho/ObjectListStd.tscn")
@@ -23,7 +23,7 @@ func _display_hud_menu():
 
 # Back to main scene
 func _on_TextureButton_pressed():
-	Global.goto_scene("res://scenes/main.tscn")
+	Global.goto_scene("res://scenes/Main.tscn")
 
 func _create_button_info(scene, counter, label_counter):
 	var btn = null