fix typo: Retrieve Chunks API Docs (#10412)

web/app/(commonLayout)/datasets/template/template.en.mdx

@@ -1115,7 +1115,7 @@ import { Row, Col, Properties, Property, Heading, SubProperty, Paragraph } from
       title="Request"
       tag="POST"
       label="/datasets/{dataset_id}/retrieve"
-      targetCode={`curl --location --request GET '${props.apiBaseUrl}/datasets/{dataset_id}/retrieve' \\\n--header 'Authorization: Bearer {api_key}'\\\n--header 'Content-Type: application/json'\\\n--data-raw '{
+      targetCode={`curl --location --request POST '${props.apiBaseUrl}/datasets/{dataset_id}/retrieve' \\\n--header 'Authorization: Bearer {api_key}'\\\n--header 'Content-Type: application/json'\\\n--data-raw '{
     "query": "test",
     "retrieval_model": {
         "search_method": "keyword_search",

web/app/(commonLayout)/datasets/template/template.zh.mdx

@@ -1116,7 +1116,7 @@ import { Row, Col, Properties, Property, Heading, SubProperty, Paragraph } from
       title="Request"
       tag="POST"
       label="/datasets/{dataset_id}/retrieve"
-      targetCode={`curl --location --request GET '${props.apiBaseUrl}/datasets/{dataset_id}/retrieve' \\\n--header 'Authorization: Bearer {api_key}'\\\n--header 'Content-Type: application/json'\\\n--data-raw '{
+      targetCode={`curl --location --request POST '${props.apiBaseUrl}/datasets/{dataset_id}/retrieve' \\\n--header 'Authorization: Bearer {api_key}'\\\n--header 'Content-Type: application/json'\\\n--data-raw '{
     "query": "test",
     "retrieval_model": {
         "search_method": "keyword_search",