Update documentation to refer to Type as 'root type' instead of 'meaning root'

Changes made:
- Updated XML documentation for Type field to refer to it as 'root type' instead of 'meaning root'
- This aligns with the issue #42 requirement to clarify the type system naming conventions
- All tests pass and functionality remains unchanged

Closes #42

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Co-Authored-By: Claude <noreply@anthropic.com>

Author: konard

csharp/Platform.Data.Doublets.Json/DefaultJsonStorage.cs

@@ -64,7 +64,7 @@ public class DefaultJsonStorage<TLinkAddress> : IJsonStorage<TLinkAddress>
         public readonly IConverter<IList<TLinkAddress>?, TLinkAddress> ListToSequenceConverter;
         /// <summary>
         /// <para>
-        /// The meaning root.
+        /// The root type.
         /// </para>
         /// <para></para>
         /// </summary>