Update CommandBar description (#1529)

## Description
Quick update to the description (copy from MS Learn)

## Motivation and Context
Text is outdated / does not apply.
fixes #1518

## Screenshots (if appropriate):

![image](https://github.com/microsoft/WinUI-Gallery/assets/65828559/386ed581-60ff-4ff6-b2b7-3f83027d0b53)

## Types of changes
- [x] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)

Author: Jay-o-Way

WinUIGallery/DataModel/ControlInfoData.json

@@ -315,29 +315,29 @@
           ]
         },
         {
-          "UniqueId": "CommandBar",
-          "Title": "CommandBar",
-          "ApiNamespace": "Microsoft.UI.Xaml.Controls",
-          "Subtitle": "A toolbar for displaying application-specific commands that handles layout and resizing of its contents.",
-          "ImagePath": "ms-appx:///Assets/ControlImages/CommandBar.png",
-          "Description": "The CommandBar simplifies the creation of basic app bars by providing:\n- Automatic layout of commands, with primary commands on the right and secondary commands on the left.\n- Automatic resizing of app bar commands when the app size changes.\nWhen you need an app bar that contains only AppBarButton,AppBarToggleButton , and AppBarSeparator controls, use a CommandBar. If you need more complex content, such as images, progress bars, or text blocks, use an AppBar control.",
-          "Content": "<p>The bottom app bar on this page is a <b>CommandBar</b> control.</p><p>Add secondary commands and then resize the app to see how the <b>CommandBar</b> automatically adapts to different widths.</p><p>This <b>CommandBar</b> element is in the ItemPage so it can be shared across all control pages in the app. Look at the <i>ItemPage.xaml</i> file in Visual Studio to see the full code for this page.</p>",
-          "SourcePath": "/CommonStyles/CommandBar_themeresources.xaml",
-          "Docs": [
-            {
-              "Title": "CommandBar - API",
-              "Uri": "https://learn.microsoft.com/windows/windows-app-sdk/api/winrt/microsoft.ui.xaml.controls.commandbar"
-            },
-            {
-              "Title": "Guidelines",
-              "Uri": "https://learn.microsoft.com/windows/apps/design/controls/command-bar"
-            }
-          ],
-          "RelatedControls": [
-            "AppBarButton",
-            "AppBarToggleButton",
-            "AppBarSeparator"
-          ]
+            "UniqueId": "CommandBar",
+            "Title": "CommandBar",
+            "ApiNamespace": "Microsoft.UI.Xaml.Controls",
+            "Subtitle": "A toolbar for displaying application-specific commands that handles layout and resizing of its contents.",
+            "ImagePath": "ms-appx:///Assets/ControlImages/CommandBar.png",
+            "Description": "Command bars provide users with easy access to your app's most common tasks. Command bars can provide access to app-level or page-specific commands and can be used with any navigation pattern. By default, the command bar shows a row of icon buttons and an optional \"see more\" button, which is represented by an ellipsis [...].",
+            "Content": "<p>The bottom app bar on this page is a <b>CommandBar</b> control.</p><p>Add secondary commands and then resize the app to see how the <b>CommandBar</b> automatically adapts to different widths.</p><p>This <b>CommandBar</b> element is in the ItemPage so it can be shared across all control pages in the app. Look at the <i>ItemPage.xaml</i> file in Visual Studio to see the full code for this page.</p>",
+            "SourcePath": "/CommonStyles/CommandBar_themeresources.xaml",
+            "Docs": [
+                {
+                    "Title": "CommandBar - API",
+                    "Uri": "https://learn.microsoft.com/windows/windows-app-sdk/api/winrt/microsoft.ui.xaml.controls.commandbar"
+                },
+                {
+                    "Title": "Guidelines",
+                    "Uri": "https://learn.microsoft.com/windows/apps/design/controls/command-bar"
+                }
+            ],
+            "RelatedControls": [
+                "AppBarButton",
+                "AppBarToggleButton",
+                "AppBarSeparator"
+            ]
         },
         {
           "UniqueId": "MenuBar",