Shadow DOM: describe copyStylesToShadowDom (#8077) (#8085)

Author: vladaskorohodova

MenuConfig.xml

@@ -66,6 +66,8 @@
 
   <MenuRule Destination="15 Common Concepts/50 Module Structure" SourcePattern="Howto:^Common/Modularity/02 DevExtreme Modules Structure" />
 
+  <MenuRule Destination="15 Common Concepts/60 Shadow DOM" SourcePattern="Howto:^Common/Shadow DOM" />
+
   <MenuRule Destination="20 DevExtreme CLI" SourcePattern="Howto:^Common/DevExtreme CLI" />
   <MenuRule Destination="25 Angular Application Template" SourcePattern="Howto:^40 Angular Components/30 Application Template" />
   <MenuRule Destination="26 Vue Application Template" SourcePattern="Howto:^55 Vue Components/50 Application Template" />

api-reference/50 Common/Object Structures/GlobalConfig/copyStylesToShadowDom.md

@@ -5,7 +5,7 @@ default: true
 ---
 ---
 ##### shortDescription
-<!-- Description goes here -->
+Specifies whether to copy DevExtreme stylesheets into the Shadow DOM.
 
 ---
-<!-- Description goes here -->
+Set this property to `true` to inject DevExtreme stylesheets into the Shadow DOM (if the stylesheets are hosted on the same domain as `index.html`). Set to `false` to skip injection.