chore: update README.md links

Author: mdrxy

README.md

@@ -2,10 +2,10 @@
 
 This repository contains 1 package with Elasticsearch integrations with LangChain:
 
-- [langchain-elasticsearch](https://pypi.org/project/langchain-elasticsearch/) integrates [Elasticsearch](https://www.elastic.co/elasticsearch).
-    - [ElasticsearchStore](https://python.langchain.com/docs/integrations/vectorstores/elasticsearch/)
-    - [ElasticsearchRetriever](https://python.langchain.com/docs/integrations/retrievers/elasticsearch_retriever/)
-    - [ElasticsearchEmbeddings](https://python.langchain.com/docs/integrations/text_embedding/elasticsearch/)
-    - [ElasticsearchChatMessageHistory](https://python.langchain.com/docs/integrations/memory/elasticsearch_chat_message_history/)
-    - [ElasticsearchCache](https://python.langchain.com/docs/integrations/llm_caching/#elasticsearch-cache)
-    - [ElasticsearchEmbeddingsCache](https://python.langchain.com/docs/integrations/stores/elasticsearch/)
+- [langchain-elasticsearch](https://docs.langchain.com/oss/python/integrations/providers/elasticsearch) integrates [Elasticsearch](https://www.elastic.co/elasticsearch).
+  - [`ElasticsearchStore`](https://docs.langchain.com/oss/python/integrations/vectorstores/elasticsearch)
+  - [`ElasticsearchRetriever`](https://docs.langchain.com/oss/python/integrations/retrievers/elasticsearch_retriever)
+  - [`ElasticsearchEmbeddings`](https://docs.langchain.com/oss/python/integrations/text_embedding/elasticsearch)
+  - `ElasticsearchChatMessageHistory`
+  - `ElasticsearchCache`
+  - [`ElasticsearchEmbeddingsCache`](https://docs.langchain.com/oss/python/integrations/stores/elasticsearch)