server : (docs) Update wrong tool calling example (#11809)

Call updated to match the tool used in the output just below, following the example in https://github.com/ggerganov/llama.cpp/pull/9639

examples/server/README.md

@@ -1437,17 +1437,17 @@ curl http://localhost:8080/v1/chat/completions \
       {
         "type":"function",
         "function":{
-          "name":"get_current_weather",
-          "description":"Get the current weather in a given location",
+          "name":"python",
+          "description":"Runs code in an ipython interpreter and returns the result of the execution after 60 seconds.",
           "parameters":{
             "type":"object",
             "properties":{
-              "location":{
+              "code":{
                 "type":"string",
-                "description":"The city and state, e.g. San Francisco, CA"
+                "description":"The code to run in the ipython interpreter."
               }
             },
-            "required":["location"]
+            "required":["code"]
           }
         }
       }
@@ -1455,7 +1455,7 @@ curl http://localhost:8080/v1/chat/completions \
     "messages": [
       {
         "role": "user",
-        "content": "What is the weather like in Istanbul?."
+        "content": "Print a hello world message with python."
       }
     ]
   }'