retriever/milvus: Update README.md (opea-project#789)

Signed-off-by: Cathy Zhang <[email protected]>
Co-authored-by: lvliang-intel <[email protected]>

comps/retrievers/milvus/langchain/README.md

@@ -18,7 +18,7 @@ Please refer to this [readme](../../../vectorstores/milvus/README.md).
 export no_proxy=${your_no_proxy}
 export http_proxy=${your_http_proxy}
 export https_proxy=${your_http_proxy}
-export MILVUS=${your_milvus_host_ip}
+export MILVUS_HOST=${your_milvus_host_ip}
 export MILVUS_PORT=19530
 export COLLECTION_NAME=${your_collection_name}
 export MOSEC_EMBEDDING_ENDPOINT=${your_emdding_endpoint}
@@ -43,7 +43,7 @@ docker build -t opea/retriever-milvus:latest --build-arg https_proxy=$https_prox
 ### Run Docker with CLI
 
 ```bash
-docker run -d --name="retriever-milvus-server" -p 7000:7000 --ipc=host -e http_proxy=$http_proxy -e https_proxy=$https_proxy -e MOSEC_EMBEDDING_ENDPOINT=${your_emdding_endpoint} -e MILVUS=${your_milvus_host_ip}  opea/retriever-milvus:latest
+docker run -d --name="retriever-milvus-server" -p 7000:7000 --ipc=host -e http_proxy=$http_proxy -e https_proxy=$https_proxy -e MOSEC_EMBEDDING_ENDPOINT=${your_emdding_endpoint} -e MILVUS_HOST=${your_milvus_host_ip}  opea/retriever-milvus:latest
 ```
 
 ## 🚀3. Consume Retriever Service