Fixes #8310 Fix maximum recursion depth exceeded error (#8313)

ElasticsearchVectorStore.as_retriever() method is returning 
`RecursionError: maximum recursion depth exceeded` 
because of incorrect field reference in
 `embeddings()` method

  - Description: Fix RecursionError because of a typo
  - Issue: the issue #8310 
  - Dependencies: None,
  - Tag maintainer: @eyurtsev
  - Twitter handle: bpatel

libs/langchain/langchain/vectorstores/elastic_vector_search.py

@@ -155,7 +155,7 @@ class ElasticVectorSearch(VectorStore, ABC):
 
     @property
     def embeddings(self) -> Embeddings:
-        return self.embeddings
+        return self.embedding
 
     def add_texts(
         self,