Added comment about min data rows for current demo

Author: ovalle15

examples/basics/custom_embeddings.ipynb

@@ -160,6 +160,7 @@
       "outputs": [],
       "source": [
         "# get images from a Labelbox dataset\n",
+        "# Our systems start to process data after 1000 embeddings of each type, for this demo make sure your dataset is over 1000 data rows",
         "dataset = client.get_dataset(\"<ADD YOUR DATASET ID>\")\n",
         "drs = list(dataset.export_data_rows(timeout_seconds=9999))\n",
         "data_row_ids = [dr.uid for dr in drs]"