doc: 移除 2019 文字

Author: ArgoZhang

src/BootstrapBlazor.Server/Components/Components/InstallContent.razor

@@ -8,10 +8,10 @@
 
 <p>@Localizer["P1"]</p>
 <ul class="ul-demo">
-    <li><code>visual studio 2019</code> @Localizer["P2"] <code>visual studio 2022</code></li>
+    <li><code>visual studio</code> @Localizer["P2"]</li>
     <li><code>net5</code> @Localizer["P3"] <code>net6</code> <code>net7</code></li>
 </ul>
-<p><code>BootstrapBlazor</code> @Localizer["P4"] <code>NET6/NET7/NET8</code></p>
+<p><code>BootstrapBlazor</code> @Localizer["P4"] <code>NET6/NET7/NET8/NET9</code></p>
 
 <h4>@Localizer["P5"]</h4>
 

src/BootstrapBlazor/readme.md

@@ -28,7 +28,7 @@
 ## Installation Guide
 
 - Install .net core sdk [Official website](https://dotnet.microsoft.com/download?wt.mc_id=DT-MVP-5004174)
-- Install Visual Studio 2019 lastest [Official website](https://visualstudio.microsoft.com/vs/getting-started?wt.mc_id=DT-MVP-5004174)
+- Install Visual Studio lastest [Official website](https://visualstudio.microsoft.com/vs/getting-started?wt.mc_id=DT-MVP-5004174)
 
 ```shell
 git clone https://github.com/dotnetcore/BootstrapBlazor.git