Update E5 blog URL (elastic#101)

Author: leemthompo

notebooks/search/04-multilingual.ipynb

@@ -19,7 +19,7 @@
     "\n",
     " While this example is using dense retrieval only, it's possible to also combine dense and traditional lexical retrieval\n",
     " with hybrid search. For more information on lexical multilingual search, please see the blog post\n",
-    " [Multilingual search using language identification in Elasticsearch](https://www.elastic.co/blog/multilingual-search-using-language-identification-in-elasticsearch).\n",
+    " [Multilingual search using language identification in Elasticsearch](https://www.elastic.co/search-labs/multilingual-vector-search-e5-embedding-model).\n",
     "\n",
     " The dataset used contains snippets of Wikipedia passages from the [MIRACL](https://project-miracl.github.io/) dataset."
    ]