[Bug]: [restful v2] search api doesn't work well with searchParams

[wwli05]

Is there an existing issue for this?

• I have searched the existing issues

Environment

- Milvus version:2.3.17
- Deployment mode(standalone or cluster):cluster
- MQ type(rocksmq, pulsar or kafka): pulsar
- SDK version(e.g. pymilvus v2.0.0rc2): restful v2
- OS(Ubuntu or CentOS): ubuntu
- CPU/Memory: 
- GPU: 
- Others:

Current Behavior

1.in code [internal/distributed/proxy/httpserver/handler_v2.go], SearchReqV2 struct contains filed [params] , but in restful v2
tutorial section it declares [searchParams] which does not seem match;
2.if i want to declare special param just like [nprobe](FOR IVF_FLAT index) in [params], it does not take effect when i follows the next code in [handler_v2.go]

Expected Behavior

when I declare special search param, it takes effect so that I can take controll of various query params.

Steps To Reproduce

No response

Milvus Log

No response

Anything else?

No response

[yanliang567]

please try the code snippet below, or share some code for reproduction

search_params = {
    "metric_type": "IP",
    "params": {"nprob": 128}
}

# Search with limit
res = client.search(
    collection_name="test_collection",
    data=data,
    limit=3,
    search_params=search_params
)

/assign @wwli05
/unassign

[wwli05]

pls check below code
curl --location --request POST "http://${}/v2/vectordb/entities/search"
--header ""
--data-raw '{
"collectionName":"",
"data": [],
"annsField": "vector",
"searchParams": [
"metricType":"IP",
"params":{
"nprobe":16 ---we adjust this value, but the performance has no impact, it seems this param does not take effect in Rest V2
]
}'

[xiaofan-luan]

/assign @PowderLi
can you check on that?