Update LeptonX doc header

docs/en/ui-themes/lepton-x/index.md

@@ -41,7 +41,7 @@ This module follows the [module development best practices guide](../../framewor
 * @volo/abp.aspnetcore.mvc.ui.theme.leptonx
 * @volo/aspnetcore.components.server.leptonxtheme
 
-#### Angular
+### Angular
 
 * @volo/abp.ng.lepton-x.core
 * @volo/ngx-lepton-x.core
@@ -56,15 +56,15 @@ LeptonX Theme module doesn't provide any UI pages. It just changes the existing
 
 ![lepton-theme-module-login-page](../../images/lepton-x-theme-module-login-page.png) 
 
-#### Languages Page
+### Languages Page
 
 ![lepton-theme-module-languages-page](../../images/lepton-x-theme-module-languages-page.png)
 
 ### Pages
 
 This module doesn't define any pages.
 
-#### Identity Module Settings UI
+### Identity Module Settings UI
 
 LeptonX Theme module adds a new tab to the Settings page to customize the behavior on runtime.