Docs: Fix a typo in elasticsearch vectorstore notebook (langchain-ai#…

…15807)

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docs/docs/integrations/vectorstores/elasticsearch.ipynb

@@ -720,7 +720,7 @@
    "metadata": {},
    "source": [
     "## Customise the Query\n",
-    "With `custom_query` parameter at search, you are able to adjust the query that is used to retrieve documents from Elasticsearch. This is useful if you want to want to use a more complex query, to support linear boosting of fields."
+    "With `custom_query` parameter at search, you are able to adjust the query that is used to retrieve documents from Elasticsearch. This is useful if you want to use a more complex query, to support linear boosting of fields."
    ]
   },
   {