Update tools.adoc (#3624)

Auto-cherry-pick to 1.0.x

Fixes #3624
Signed-off-by: chen.xue <huihaoweishui@163.com>

Author: huihaoweishui

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

@@ -515,7 +515,7 @@ When using the programmatic specification approach, you can pass the `FunctionTo
 ToolCallback toolCallback = ...
 ChatClient.create(chatModel)
     .prompt("What's the weather like in Copenhagen?")
-    .tools(toolCallback)
+    .toolCallbacks(toolCallback)
     .call()
     .content();
 ----