fix too long excerpt

Author: MathieuBsqt

pages/public_cloud/ai_machine_learning/endpoints_tuto_08_streaming_chatbot_langchain4j_quarkus/guide.en-gb.md

@@ -1,6 +1,6 @@
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 title: AI Endpoints - Streaming Chatbot with LangChain4j and Quarkus
-excerpt: Learn how to build a Java-based chatbot that streams responses from AI Endpoints for a real-time conversational experience
+excerpt: How to build a Java-based chatbot that streams responses from AI Endpoints for a real-time chat experience
 updated: 2025-04-15
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