add missing excerpt

Author: MathieuBsqt

pages/public_cloud/ai_machine_learning/endpoints_tuto_04_chatbot_langchain4j_quarkus/guide.en-gb.md

@@ -1,6 +1,6 @@
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 title: AI Endpoints - Create your own AI chatbot using LangChain4j and Quarkus
-excerpt: 
+excerpt: Learn how to build an AI-powered chatbot using LangChain4j, Quarkus, and OVHcloud AI Endpoints.
 updated: 2025-04-11
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