Updating Llama 4 Notebook

PiperOrigin-RevId: 770307483

Author: vertex-mg-bot

notebooks/community/model_garden/model_garden_pytorch_llama4_deployment.ipynb

@@ -732,7 +732,7 @@
         "\n",
         "\n",
         "# The pre-built serving docker images.\n",
-        "HEXLLM_DOCKER_URI = \"us-docker.pkg.dev/vertex-ai-restricted/vertex-vision-model-garden-dockers/hex-llm-serve:llama4\"\n",
+        "HEXLLM_DOCKER_URI = \"us-docker.pkg.dev/vertex-ai-restricted/vertex-vision-model-garden-dockers/hex-llm-serve:stable\"\n",
         "\n",
         "# @markdown Find Vertex AI prediction TPUv5e machine types in\n",
         "# @markdown https://cloud.google.com/vertex-ai/docs/predictions/use-tpu#deploy_a_model.\n",