minor docs improvment

Author: tzolov

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

@@ -2,14 +2,17 @@
 
 TIP: You need Ollama 0.2.8 or newer.
 
+TIP: You need https://ollama.com/library[Models] pre-trained for Tools support. 
+Usually, such models are tagged with a `Tools` tag.
+For example `mistral`, `firefunction-v2` or `llama3.1:70b`.
+
 NOTE: Currently, the Ollama API (0.2.8) does not support function calling in streaming mode.
 
 You can register custom Java functions with the `OllamaChatModel` and have the Ollama deployed model intelligently choose to output a JSON object containing arguments to call one or many of the registered functions.
 This allows you to connect the LLM capabilities with external tools and APIs.
 The Ollama models tagged with the `Tools` label are trained to detect when a function should be called and to respond with JSON that adheres to the function signature.
 
 The Ollama API does not call the function directly; instead, the model generates JSON that you can use to call the function in your code and return the result back to the model to complete the conversation.
-
 Spring AI provides flexible and user-friendly ways to register and call custom functions.
 In general, the custom functions need to provide a function `name`,  `description`, and the function call `signature` (as JSON schema) to let the model know what arguments the function expects.  
 The `description` helps the model to understand when to call the function.

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

@@ -13,5 +13,6 @@ Spring AI currently supports Function invocation for the following AI Models
 * Groq: Refer to the xref:api/chat/groq-chat.adoc#_function_calling[Groq function invocation docs].
 * Mistral AI: Refer to the xref:api/chat/functions/mistralai-chat-functions.adoc[Mistral AI function invocation docs].
 // * MiniMax : Refer to the xref:api/chat/functions/minimax-chat-functions.adoc[MiniMax function invocation docs].
+* Ollama: Refer to the xref:api/chat/functions/ollama-chat-functions.adoc[Ollama function invocation docs] (streeming not supported yet).
 * OpenAI: Refer to the xref:api/chat/functions/openai-chat-functions.adoc[Open AI function invocation docs].
 // * ZhiPu AI : Refer to the xref:api/chat/functions/zhipuai-chat-functions.adoc[ZhiPu AI function invocation docs].