This update replaces instances of DecodeJson and DecodeJsonStr with UnmarshalJson and UnmarshalJsonStr in various relay handlers, enhancing code consistency and clarity in JSON processing. The changes improve maintainability and align with recent refactoring efforts in the codebase.
- Changed the type of `Document` in `XinRerankResponseDocument` from `string` to `any` to accommodate various data types.
- Updated the `RerankHandler` to handle `Document` as `any`, ensuring proper assignment based on its actual type.
These modifications enhance the handling of document data, allowing for greater versatility in response structures.
