Remove multiple blank lines in Blazor\Basic-Theme.md

docs/en/UI/Blazor/Basic-Theme.md

@@ -33,7 +33,6 @@ The Basic Theme is a theme implementation for the Blazor UI. It is a minimalist
 
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 * Make sure [AspNetCore Basic Theme](../AspNetCore/Basic-Theme.md) installation steps are completed. 
@@ -59,7 +58,6 @@ The Basic Theme is a theme implementation for the Blazor UI. It is a minimalist
 
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 ## The Layout
 
 ![basic-theme-application-layout](../../images/basic-theme-application-layout.png)
@@ -91,7 +89,6 @@ See the [Customization / Overriding Components](Customization-Overriding-Compone
 
 You can run the following [ABP CLI](../../CLI.md) command in **Blazor WebAssembly** project directory to copy the source code to your solution:
 
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 {{if UI == "Blazor"}}
 
 `abp add-package Volo.Abp.AspNetCore.Components.WebAssembly.BasicTheme --with-source-code --add-to-solution-file`
@@ -114,7 +111,6 @@ Then, navigate to downloaded `Volo.Abp.AspNetCore.Components.Server.BasicTheme`
 
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 Or, you can download the source code of the Basic Theme, manually copy the project content into your solution, re-arrange the package/module dependencies (see the Installation section above to understand how it was installed to the project) and freely customize the theme based on your application requirements.
 
 {{if UI == "Blazor"}}