Update README.md

Author: mckaragoz

README.md

@@ -36,6 +36,7 @@
 ## Extended Components
 
 - MudListExtended
+- MudSelectExtended
 
 ## Supported MudBlazor Versions
 | MudExtensions | MudBlazor | .Net |
@@ -44,7 +45,7 @@
 | 6.0.4 - 6.0.12 | 6.0.17 - 6.0.18 | .Net 6 |
 | 6.1.0 - 6.1.4 | 6.1.0 - 6.1.2 | .Net 6 & .Net 7 |
 | 6.1.5 - 6.1.9 | 6.1.4 - 6.1.7 | .Net 6 & .Net 7 |
-| 6.2.0 | 6.1.8 | .Net 6 & .Net 7 |
+| 6.2.0 - 6.2.1 | 6.1.8 | .Net 6 & .Net 7 |
 
 ## Installation
 This extension uses MudBlazor features (need to set up MudBlazor if you didn't before), so only need to add this line described below:<br /><br />
@@ -60,6 +61,7 @@ Add the following to your HTML **body** section
 
 Add the extension services into program.cs
 ```razor
+using MudExtensions.Services;
 builder.Services.AddMudExtensions();
 ```