refactor: ollam api_base configuration (#285)

config.example.yaml

@@ -41,7 +41,7 @@ clients:
 
   # See https://github.com/jmorganca/ollama
   - type: ollama
-    api_base: http://localhost:11434/api
+    api_base: http://localhost:11434
     api_key: Basic xxx                                # Set authorization header
     chat_endpoint: /chat                              # Optional field
     models:

src/client/ollama.rs

@@ -86,7 +86,7 @@ impl OllamaClient {
 
         let body = build_body(data, self.model.name.clone())?;
 
-        let chat_endpoint = self.config.chat_endpoint.as_deref().unwrap_or("/chat");
+        let chat_endpoint = self.config.chat_endpoint.as_deref().unwrap_or("/api/chat");
 
         let url = format!("{}{chat_endpoint}", self.config.api_base);