nit: merge two StackPanels (#1421)

## Description
nit:  merge two StackPanels

## Motivation and Context
No big deal, just a nit.

WinUIGallery/ControlPages/SemanticZoomPage.xaml

@@ -1,60 +1,81 @@
 <!--
-//*********************************************************
-//
-// Copyright (c) Microsoft. All rights reserved.
-// THIS CODE IS PROVIDED *AS IS* WITHOUT WARRANTY OF
-// ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING ANY
-// IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR
-// PURPOSE, MERCHANTABILITY, OR NON-INFRINGEMENT.
-//
-//*********************************************************
+    //*********************************************************
+    //
+    // Copyright (c) Microsoft. All rights reserved.
+    // THIS CODE IS PROVIDED *AS IS* WITHOUT WARRANTY OF
+    // ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING ANY
+    // IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR
+    // PURPOSE, MERCHANTABILITY, OR NON-INFRINGEMENT.
+    //
+    //*********************************************************
 -->
 <Page
     x:Class="AppUIBasics.ControlPages.SemanticZoomPage"
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
-    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:local="using:AppUIBasics"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:data="using:AppUIBasics.Data"
+    xmlns:local="using:AppUIBasics"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     xmlns:wuxdata="using:Microsoft.UI.Xaml.Data"
     mc:Ignorable="d">
     <Page.Resources>
-        <CollectionViewSource x:Name="cvsGroups" Source="{x:Bind Groups}" IsSourceGrouped="True" ItemsPath="Items"
-                              d:Source="{Binding Groups, Source={d:DesignData Source=/DataModel/ControlInfoData.json, Type=data:ControlInfoDataSource}}"/>
+        <CollectionViewSource
+            x:Name="cvsGroups"
+            d:Source="{Binding Groups, Source={d:DesignData Source=/DataModel/ControlInfoData.json, Type=data:ControlInfoDataSource}}"
+            IsSourceGrouped="True"
+            ItemsPath="Items"
+            Source="{x:Bind Groups}" />
 
         <DataTemplate x:Key="ZoomedInTemplate" x:DataType="data:ControlInfoDataItem">
-            <StackPanel Orientation="Horizontal" MinWidth="200" Margin="12,6,12,6">
-                <StackPanel Margin="20,0,0,0">
-                    <TextBlock Text="{x:Bind Title}" Style="{StaticResource BaseTextBlockStyle}"/>
-                    <TextBlock Text="{x:Bind Subtitle}" TextWrapping="Wrap" HorizontalAlignment="Left" Width="300" Style="{StaticResource BodyTextBlockStyle}"/>
-                </StackPanel>
+            <StackPanel MinWidth="200" Margin="12,6,12,6">
+                <TextBlock Style="{StaticResource BaseTextBlockStyle}" Text="{x:Bind Title}" />
+                <TextBlock
+                    Width="300"
+                    HorizontalAlignment="Left"
+                    Style="{StaticResource BodyTextBlockStyle}"
+                    Text="{x:Bind Subtitle}"
+                    TextWrapping="Wrap" />
             </StackPanel>
         </DataTemplate>
 
         <DataTemplate x:Key="ZoomedInGroupHeaderTemplate" x:DataType="data:ControlInfoDataGroup">
-            <TextBlock Text="{x:Bind Title}" Foreground="{ThemeResource ApplicationForegroundThemeBrush}" Style="{StaticResource SubtitleTextBlockStyle}"/>
+            <TextBlock
+                Foreground="{ThemeResource ApplicationForegroundThemeBrush}"
+                Style="{StaticResource SubtitleTextBlockStyle}"
+                Text="{x:Bind Title}" />
         </DataTemplate>
 
         <DataTemplate x:Key="ZoomedOutTemplate" x:DataType="wuxdata:ICollectionViewGroup">
-            <TextBlock Text="{x:Bind ((data:ControlInfoDataGroup)Group).Title}" Style="{StaticResource SubtitleTextBlockStyle}" TextWrapping="Wrap"/>
+            <TextBlock
+                Style="{StaticResource SubtitleTextBlockStyle}"
+                Text="{x:Bind ((data:ControlInfoDataGroup)Group).Title}"
+                TextWrapping="Wrap" />
         </DataTemplate>
     </Page.Resources>
 
     <StackPanel>
-        <local:ControlExample HeaderText="A simple SemanticZoom" x:Name="Example1">
+        <local:ControlExample x:Name="Example1" HeaderText="A simple SemanticZoom">
             <SemanticZoom x:Name="Control1" Height="500">
                 <SemanticZoom.ZoomedInView>
-                    <GridView ItemsSource="{x:Bind cvsGroups.View}" ScrollViewer.IsHorizontalScrollChainingEnabled="False" SelectionMode="None" GotFocus="List_GotFocus"
-                        ItemTemplate="{StaticResource ZoomedInTemplate}">
+                    <GridView
+                        GotFocus="List_GotFocus"
+                        ItemTemplate="{StaticResource ZoomedInTemplate}"
+                        ItemsSource="{x:Bind cvsGroups.View}"
+                        ScrollViewer.IsHorizontalScrollChainingEnabled="False"
+                        SelectionMode="None">
                         <GridView.GroupStyle>
                             <GroupStyle HeaderTemplate="{StaticResource ZoomedInGroupHeaderTemplate}" />
                         </GridView.GroupStyle>
                     </GridView>
                 </SemanticZoom.ZoomedInView>
 
                 <SemanticZoom.ZoomedOutView>
-                    <ListView ItemsSource="{x:Bind cvsGroups.View.CollectionGroups}" SelectionMode="None" ItemTemplate="{StaticResource ZoomedOutTemplate}" GotFocus="List_GotFocus" />
+                    <ListView
+                        GotFocus="List_GotFocus"
+                        ItemTemplate="{StaticResource ZoomedOutTemplate}"
+                        ItemsSource="{x:Bind cvsGroups.View.CollectionGroups}"
+                        SelectionMode="None" />
                 </SemanticZoom.ZoomedOutView>
             </SemanticZoom>
             <local:ControlExample.Xaml>