Format example (#393)

Author: FeodorFitsner

docs/controls/overview.md

@@ -103,23 +103,42 @@ When a child Control is placed into a [`Column`](/docs/controls/column) or a [`R
 
 For more information and examples about `expand` property see "Expanding children" sections in [`Column`](/docs/controls/column#expanding-children) or [`Row`](/docs/controls/row#expanding-children).
 
-Here is an example of expand being used in action for both [`Column`](/docs/controls/column) and [`Row`](/docs/controls/row) .
+Here is an example of expand being used in action for both [`Column`](/docs/controls/column) and [`Row`](/docs/controls/row):
+
 ```pyhton
 import flet as ft
 
-
 def main(page: ft.Page):
-    page.spacing=0
-    page.padding=0
+    page.spacing = 0
+    page.padding = 0
     page.add(
-            ft.Column(controls=[
-              ft.Row(
-                  [
-                  ft.Card(content=ft.Text("Card_1"),color=ft.Colors.ORANGE_300,expand=True,height=page.height,margin=0),
-                  ft.Card(content=ft.Text("Card_2"),color=ft.Colors.GREEN_100,expand=True,height=page.height,margin=0)
-                  ],expand=True,spacing=0),
-                               ],expand=True,spacing=0),
-           )
+        ft.Column(
+            controls=[
+                ft.Row(
+                    [
+                        ft.Card(
+                            content=ft.Text("Card_1"),
+                            color=ft.Colors.ORANGE_300,
+                            expand=True,
+                            height=page.height,
+                            margin=0,
+                        ),
+                        ft.Card(
+                            content=ft.Text("Card_2"),
+                            color=ft.Colors.GREEN_100,
+                            expand=True,
+                            height=page.height,
+                            margin=0,
+                        ),
+                    ],
+                    expand=True,
+                    spacing=0,
+                ),
+            ],
+            expand=True,
+            spacing=0,
+        ),
+    )
 
 ft.app(main)
 ```