fix hello world example

README.md

@@ -39,8 +39,8 @@
   import nodesnim
 
   Window("Hello, world!")
-  
-  
+
+
   build:
     - Scene scene:
       name: "Main"
@@ -48,8 +48,8 @@
         call setSizeAnchor(1, 1)
         call setTextAlign(0.5, 0.5, 0.5, 0.5)
         call setText("Hello, world!")
-        background_color: Color(31, 45, 62)
-  
+        call setBackgroundColor(Color(31, 45, 62))
+
   addMainScene(scene)
   windowLaunch()
   

examples/hello_world/main.nim

@@ -10,7 +10,7 @@ build:
       call setSizeAnchor(1, 1)
       call setTextAlign(0.5, 0.5, 0.5, 0.5)
       call setText("Hello, world!")
-      background_color: Color(31, 45, 62)
+      call setBackgroundColor(Color(31, 45, 62))
 
 addMainScene(scene)
 windowLaunch()