[emacs] Replace default model for ellama

This models return better results ans also show its thinking process

.emacs.d/bootstrap.org

@@ -796,7 +796,7 @@ UI to interact with models, relies on ~llm~
   (with-eval-after-load 'llm-ollama
     (setopt ellama-provider (make-llm-ollama
                              :host "localhost"
-                             :chat-model "deepseek-coder-v2"))))
+                             :chat-model "deepseek-r1:8b"))))
 #+end_src
 
 Custom functions to better management of models