Fix the Retriever README error (#655)

* change based on comments for missing places.
Signed-off-by: zhlsunshine <[email protected]>

comps/retrievers/pathway/langchain/README.md

@@ -23,13 +23,19 @@ docker run -p 6060:80 -e http_proxy=$http_proxy -e https_proxy=$https_proxy --pu
 Health check the embedding service with:
 
 ```bash
-curl 127.0.0.1:6060/embed     -X POST     -d '{"inputs":"What is Deep Learning?"}'     -H 'Content-Type: application/json'
+curl 127.0.0.1:6060/embed \
+    -X POST \
+    -d '{"inputs":"What is Deep Learning?"}' \
+    -H 'Content-Type: application/json'
 ```
 
 If the model supports re-ranking, you can also use:
 
 ```bash
-curl 127.0.0.1:6060/rerank     -X POST     -d '{"query":"What is Deep Learning?", "texts": ["Deep Learning is not...", "Deep learning is..."]}'     -H 'Content-Type: application/json'
+curl 127.0.0.1:6060/rerank \
+    -X POST \
+    -d '{"query":"What is Deep Learning?", "texts": ["Deep Learning is not...", "Deep learning is..."]}' \
+    -H 'Content-Type: application/json'
 ```
 
 #### Start Retriever Service

comps/retrievers/pgvector/langchain/README.md

@@ -26,10 +26,12 @@ docker run -d -p 6060:80 -v $volume:/data -e http_proxy=$http_proxy -e https_pro
 
 ### 1.3 Verify the TEI Service
 
+Health check the embedding service with:
+
 ```bash
-curl 127.0.0.1:6060/rerank \
+curl 127.0.0.1:6060/embed \
     -X POST \
-    -d '{"query":"What is Deep Learning?", "texts": ["Deep Learning is not...", "Deep learning is..."]}' \
+    -d '{"inputs":"What is Deep Learning?"}' \
     -H 'Content-Type: application/json'
 ```
 

comps/retrievers/redis/langchain/README.md

@@ -26,10 +26,12 @@ docker run -d -p 6060:80 -v $volume:/data -e http_proxy=$http_proxy -e https_pro
 
 ### 1.3 Verify the TEI Service
 
+Health check the embedding service with:
+
 ```bash
-curl 127.0.0.1:6060/rerank \
+curl 127.0.0.1:6060/embed \
     -X POST \
-    -d '{"query":"What is Deep Learning?", "texts": ["Deep Learning is not...", "Deep learning is..."]}' \
+    -d '{"inputs":"What is Deep Learning?"}' \
     -H 'Content-Type: application/json'
 ```
 

comps/retrievers/vdms/langchain/README.md

@@ -43,10 +43,12 @@ docker run -d -p 6060:80 -v $volume:/data -e http_proxy=$http_proxy -e https_pro
 
 ### 1.3 Verify the TEI Service
 
+Health check the embedding service with:
+
 ```bash
-curl 127.0.0.1:6060/rerank \
+curl 127.0.0.1:6060/embed \
     -X POST \
-    -d '{"query":"What is Deep Learning?", "texts": ["Deep Learning is not...", "Deep learning is..."]}' \
+    -d '{"inputs":"What is Deep Learning?"}' \
     -H 'Content-Type: application/json'
 ```