Update bge_huggingface.ipynb (#8960)

- Description: Considering the similarity computation method of
[BGE](https://github.com/FlagOpen/FlagEmbedding) model is cosine
similarity, set normalize_embeddings to be True.
- Tag maintainer: @baskaryan

Co-authored-by: Erick Friis <erick@langchain.dev>

docs/docs/integrations/text_embedding/bge_huggingface.ipynb

@@ -36,7 +36,7 @@
     "\n",
     "model_name = \"BAAI/bge-small-en\"\n",
     "model_kwargs = {'device': 'cpu'}\n",
-    "encode_kwargs = {'normalize_embeddings': False}\n",
+    "encode_kwargs = {'normalize_embeddings': True}\n",
     "hf = HuggingFaceBgeEmbeddings(\n",
     "    model_name=model_name,\n",
     "    model_kwargs=model_kwargs,\n",