Update CLI.md

docs/en/CLI.md

@@ -161,7 +161,7 @@ abp add-package <package-name> [options]
 Example:
 
 ````
-abp add-package Volo.Abp.MongoDB
+abp add-package Volo.Abp.AspNetCore.Mvc.UI.Theme.Basic
 ````
 
 * This example adds the Volo.Abp.MongoDB package to the project.
@@ -170,7 +170,14 @@ abp add-package Volo.Abp.MongoDB
 
 * `--project` or `-p`: Specifies the project (.csproj) file path. If not specified, CLI tries to find a .csproj file in the current directory.
 * `--with-source-code`: Downloads the source code of the package to your solution folder and uses local project references instead of NuGet/NPM packages.
-* `--add-to-solution-file`: Adds the downloaded package to your solution file, so you will also see the package when you open the solution on a IDE. (only available when `--with-source-code` is True.)
+* `--add-to-solution-file`: Adds the downloaded package to your solution file, so you will also see the package when you open the solution on a IDE. (only available when `--with-source-code` is True)
+
+> Currently only the source code of theme packages can be downloaded.
+> - Volo.Abp.AspNetCore.Mvc.UI.Theme.Basic
+> - Volo.Abp.AspNetCore.Components.WebAssembly.BasicTheme
+> - Volo.Abp.AspNetCore.Components.Web.BasicTheme
+> - Volo.Abp.AspNetCore.Components.Server.BasicTheme
+
 
 ### add-module
 
@@ -454,4 +461,4 @@ abp install-libs [options]
 
 ## See Also
 
-* [Examples for the new command](CLI-New-Command-Samples.md)
+* [Examples for the new command](CLI-New-Command-Samples.md)