fix #4792

Former-commit-id: d7547d6b9e4c660897e3ce0f4022e08686c172d5

src/llamafactory/data/tool_utils.py

@@ -25,9 +25,9 @@ DEFAULT_TOOL_PROMPT = (
     "You have access to the following tools:\n{tool_text}"
     "Use the following format if using a tool:\n"
     "```\n"
-    "Action: tool name (one of [{tool_names}]).\n"
+    "Action: tool name (one of [{tool_names}])\n"
     "Action Input: the input to the tool, in a JSON format representing the kwargs "
-    """(e.g. ```{{"input": "hello world", "num_beams": 5}}```).\n"""
+    """(e.g. ```{{"input": "hello world", "num_beams": 5}}```)\n"""
     "```\n"
 )