Update README.md

Author: jjtang1985

README.md

@@ -2,6 +2,7 @@
 ![CodeQL](https://github.com/SAP/ai-sdk-java/actions/workflows/github-code-scanning/codeql/badge.svg)
 [![REUSE status](https://api.reuse.software/badge/git.fsfe.org/reuse/api)](https://api.reuse.software/info/git.fsfe.org/reuse/api)
 [![Fosstars security rating](https://github.com/SAP/ai-sdk-java/actions/workflows/fosstars-report.yml/badge.svg?branch=main)](https://github.com/SAP/ai-sdk-java/blob/fosstars-report/fosstars_report.md)
+[![Ask DeepWiki](https://deepwiki.com/badge.svg)](https://deepwiki.com/SAP/ai-sdk-java)
 
 # <img src="https://sap.github.io/cloud-sdk/img/logo.svg" alt="SAP Cloud SDK" width="30"/> SAP Cloud SDK for AI (for Java)