Fix formatting of code snippets on iOS dev pages

examples/get-started/flutter-for/ios_devs/lib/canvas.dart

@@ -31,8 +31,8 @@ class SignatureState extends State<Signature> {
       },
       onPanEnd: (details) => _points.add(null),
       child:
-          // #docregion custom-paint
-          CustomPaint(
+      // #docregion custom-paint
+      CustomPaint(
         painter: SignaturePainter(_points),
         size: Size.infinite,
       ),

examples/get-started/flutter-for/ios_devs/lib/column.dart

@@ -24,8 +24,8 @@ class HomePage extends StatelessWidget {
     return const Scaffold(
       body: Center(
         child:
-            // #docregion column
-            Column(
+        // #docregion column
+        Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
             Icon(CupertinoIcons.globe),

examples/get-started/flutter-for/ios_devs/lib/cupertino_themes.dart

@@ -14,8 +14,8 @@ class App extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return const
-        // #docregion theme
-        CupertinoApp(
+    // #docregion theme
+    CupertinoApp(
       theme: CupertinoThemeData(
         brightness: Brightness.dark,
       ),
@@ -38,8 +38,8 @@ class HomePage extends StatelessWidget {
       ),
       child: Center(
         child:
-            // #docregion styling-text
-            Text(
+        // #docregion styling-text
+        Text(
           'Hello, world!',
           style: TextStyle(
             fontSize: 30,

examples/get-started/flutter-for/ios_devs/lib/navigation.dart

@@ -67,8 +67,8 @@ class HomePage extends StatelessWidget {
       ),
       child: Material(
         child:
-            // #docregion list-view
-            ListView.builder(
+        // #docregion list-view
+        ListView.builder(
           itemCount: mockPersons.length,
           itemBuilder: (context, index) {
             final person = mockPersons.elementAt(index);

examples/get-started/flutter-for/ios_devs/lib/openapp.dart

@@ -31,8 +31,8 @@ class HomePage extends StatelessWidget {
       child: SafeArea(
         child: Center(
           child:
-              // #docregion open-app-example
-              CupertinoButton(
+          // #docregion open-app-example
+          CupertinoButton(
             onPressed: () async {
               await launchUrl(
                 Uri.parse('https://google.com'),

examples/get-started/flutter-for/ios_devs/lib/row.dart

@@ -24,8 +24,8 @@ class HomePage extends StatelessWidget {
     return const Scaffold(
       body: Center(
         child:
-            // #docregion row
-            Row(
+        // #docregion row
+        Row(
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
             Icon(CupertinoIcons.globe),

examples/get-started/flutter-for/ios_devs/lib/scroll.dart

@@ -81,8 +81,8 @@ class HomePage extends StatelessWidget {
       // inside a scroll view of type
       // SingleChildScrollView (equivalent of a ScrollView in SwiftUI).
       body:
-          // #docregion scroll-example
-          SingleChildScrollView(
+      // #docregion scroll-example
+      SingleChildScrollView(
         child: Column(
           children: mockPersons
               .map(

examples/get-started/flutter-for/ios_devs/lib/simple_animation.dart

@@ -28,8 +28,8 @@ class _MyHomePageState extends State<MyHomePage> {
     return Scaffold(
       body: Center(
         child:
-            // #docregion animated-button
-            AnimatedRotation(
+        // #docregion animated-button
+        AnimatedRotation(
           duration: const Duration(seconds: 1),
           turns: turns,
           curve: Curves.easeIn,

examples/get-started/flutter-for/ios_devs/lib/stylingbutton.dart

@@ -31,8 +31,8 @@ class HomePage extends StatelessWidget {
     return CupertinoPageScaffold(
       navigationBar: const CupertinoNavigationBar(
           middle:
-              // #docregion custom-font
-              Text(
+          // #docregion custom-font
+          Text(
         'Cupertino',
         style: TextStyle(
           fontSize: 40,

examples/get-started/flutter-for/ios_devs/lib/text_button.dart

@@ -24,8 +24,8 @@ class HomePage extends StatelessWidget {
     return Scaffold(
       body: Center(
           child:
-              // #docregion text-button
-              CupertinoButton(
+      // #docregion text-button
+      CupertinoButton(
         onPressed: () {
           // This closure is called when your button is tapped.
         },

src/content/get-started/flutter-for/swiftui-devs.md

@@ -316,7 +316,7 @@ use the `CupertinoButton` class:
 
 <?code-excerpt "lib/text_button.dart (text-button)"?>
 ```dart
-        CupertinoButton(
+CupertinoButton(
   onPressed: () {
     // This closure is called when your button is tapped.
   },
@@ -362,7 +362,7 @@ HStack {
 
 <?code-excerpt "lib/row.dart (row)"?>
 ```dart
-    Row(
+Row(
   mainAxisAlignment: MainAxisAlignment.center,
   children: [
     Icon(CupertinoIcons.globe),
@@ -407,7 +407,7 @@ except it swaps [`Column`][] for `Row`:
 
 <?code-excerpt "lib/column.dart (column)"?>
 ```dart
-    Column(
+Column(
   mainAxisAlignment: MainAxisAlignment.center,
   children: [
     Icon(CupertinoIcons.globe),
@@ -619,7 +619,7 @@ of the `Person` class to create the custom `PersonView` widget.
 
 <?code-excerpt "lib/scroll.dart (scroll-example)"?>
 ```dart
-    SingleChildScrollView(
+SingleChildScrollView(
   child: Column(
     children: mockPersons
         .map(
@@ -772,7 +772,7 @@ This animates the `Transform.rotate` widget.
 
 <?code-excerpt "lib/simple_animation.dart (animated-button)"?>
 ```dart
-    AnimatedRotation(
+AnimatedRotation(
   duration: const Duration(seconds: 1),
   turns: turns,
   curve: Curves.easeIn,
@@ -825,7 +825,7 @@ with two classes that help you draw:
 
     <?code-excerpt "lib/canvas.dart (custom-paint)"?>
     ```dart
-        CustomPaint(
+    CustomPaint(
       painter: SignaturePainter(_points),
       size: Size.infinite,
     ),
@@ -963,7 +963,7 @@ call your navigation routes using their names.
 
     <?code-excerpt "lib/navigation.dart (list-view)"?>
     ```dart
-        ListView.builder(
+    ListView.builder(
       itemCount: mockPersons.length,
       itemBuilder: (context, index) {
         final person = mockPersons.elementAt(index);
@@ -1098,7 +1098,7 @@ In **Flutter**, use the [`url_launcher`][] plugin.
 
 <?code-excerpt "lib/openapp.dart (open-app-example)"?>
 ```dart
-    CupertinoButton(
+CupertinoButton(
   onPressed: () async {
     await launchUrl(
       Uri.parse('https://google.com'),
@@ -1139,7 +1139,7 @@ of the `App` class:
 
 <?code-excerpt "lib/cupertino_themes.dart (theme)"?>
 ```dart
-    CupertinoApp(
+CupertinoApp(
   theme: CupertinoThemeData(
     brightness: Brightness.dark,
   ),
@@ -1175,7 +1175,7 @@ of the `style` parameter of the `Text` widget.
 
 <?code-excerpt "lib/cupertino_themes.dart (styling-text)"?>
 ```dart
-    Text(
+Text(
   'Hello, world!',
   style: TextStyle(
     fontSize: 30,
@@ -1284,7 +1284,7 @@ following example:
 
 <?code-excerpt "lib/stylingbutton.dart (custom-font)"?>
 ```dart
-        Text(
+Text(
   'Cupertino',
   style: TextStyle(
     fontSize: 40,