[Documentation] OpenVINO Execution Provider load_config documentation may be incorrect

### Describe the documentation issue

load_config is shown as a **filename** in the [Python Example](https://onnxruntime.ai/docs/execution-providers/OpenVINO-ExecutionProvider.html#python).

However for me to get it to work I need to specify the json as a **value**. This is running on Windows; openvino 2025.3.0; onnxruntime-openvino 1.23.0

e.g. When using the following loader fails for me:

```
# test to see if load_config works as a file. Because this is what the documentation says it is.
def load_config_is_a_json_filename(model_path):
config = {
"NPU": {
"LOG_LEVEL": "LOG_DEBUG",
}
}

config_filename = "npu_config.json"
with open(config_filename, "w") as f:
json.dump(config, f)

options = {
"device_type": "NPU",
"load_config": config_filename
}
session = ort.InferenceSession(model_path,
providers=[("OpenVINOExecutionProvider", options)])
return session

```
with:
```
2025-11-12 16:57:27.1012189 [E:onnxruntime:Default, provider_bridge_ort.cc:2197 onnxruntime::OpenVINOProviderFactoryCreator::Create] C:\Users\Administrator\Documents\jatin\python_samplesss\onnxruntime\onnxruntime\core\providers\openvino\openvino_provider_factory.cc:286 class std::map,class std::allocator >,class std::map,class std::allocator >,class ov::Any,struct std::less,class std::allocator > >,class std::allocator,class std::allocator > const ,class ov::Any> > >,struct std::less,class std::allocator > >,class std::allocator,class std::allocator > const ,class std::map,class std::allocator >,class ov::Any,struct std::less,class std::allocator > >,class std::allocator,class std::allocator > const ,class ov::Any> > > > > > __cdecl onnxruntime::openvino_ep::ParseProviderInfo::::operator ()(const class std::basic_string,class std::allocator > &) const JSON parsing error: [json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid literal; last read: 'np'
```

However the following works for me:
```
def load_config_is_json_value1(model_path):
options = {
"device_type": "NPU",
"load_config": "{\"NPU\":{\"LOG_LEVEL\":\"LOG_NONE\"}}"
}

session = ort.InferenceSession(model_path,
providers=[("OpenVINOExecutionProvider", options)])
return session
```

### Page / URL

https://onnxruntime.ai/docs/execution-providers/OpenVINO-ExecutionProvider.html#python

Read the OpenVINO Execution Provider page and its Python Example at the linked documentation URL, focusing on how load_config is described. Compare that description with the reported filename and JSON-value examples, then update the documentation so the accepted form is accurate and verify the example is consistent.

Written by the indexing model from the issue text.