update callouts

docs/docs/how_to/custom_embeddings.ipynb

@@ -29,7 +29,7 @@
     "These methods ensure that your embedding model can be integrated seamlessly into the LangChain framework, providing both synchronous and asynchronous capabilities for scalability and performance optimization.\n",
     "\n",
     "\n",
-    ":::{.callout-note}\n",
+    ":::note\n",
     "`Embeddings` do not currently implement the [Runnable](/docs/concepts/runnables/) interface and are also **not** instances of pydantic `BaseModel`.\n",
     ":::\n",
     "\n",
@@ -45,7 +45,7 @@
     "\n",
     "`embed_documents` takes in a list of strings and returns a list of embeddings as a list of lists of floats.\n",
     "\n",
-    ":::{.callout-note}\n",
+    ":::note\n",
     "`embed_documents` takes in a list of plain text, not a list of LangChain `Document` objects. The name of this method\n",
     "may change in future versions of LangChain.\n",
     ":::"