Fix typo in deepseek model name in deepseek-chat.adoc

Signed-off-by: yunjun-lee-kurly <[email protected]>

Author: yunjun-lee-kurly

spring-ai-docs/src/main/antora/modules/ROOT/pages/api/chat/deepseek-chat.adoc

@@ -1,6 +1,6 @@
 = DeepSeek Chat
 
-https://www.deepseek.com/[DeepSeek AI] provides the open-source DeepSeek R3 model, renowned for its cutting-edge reasoning and problem-solving capabilities.
+https://www.deepseek.com/[DeepSeek AI] provides the open-source DeepSeek V3 model, renowned for its cutting-edge reasoning and problem-solving capabilities.
 
 Spring AI integrates with DeepSeek AI by reusing the existing xref::api/chat/openai-chat.adoc[OpenAI] client. To get started, you'll need to obtain a https://api-docs.deepseek.com/[DeepSeek API Key], configure the base URL, and select one of the supported models.