Merge pull request #109 from aws-samples/update-langchain-readme

Fix typo: OpenSearch Servie -> OpenSearch Service

Author: langchain-karan

langchain/README.md

@@ -21,7 +21,7 @@ LangChain supports a rich ecosystem AWS integrations for services such as :
 * Amazon Textract
 * Amazon Athena
 * AWS Glue
-* Amazon OpenSearch Servie
+* Amazon OpenSearch Service
 * Amazon DocumentDB
 * Amazon MemoryDB
 * Amazon Kendra