Update 29_Serializing_Pipelines.ipynb with correct model (#406)

Author: mihado

tutorials/29_Serializing_Pipelines.ipynb

@@ -78,7 +78,7 @@
    "source": [
     "## Creating a Simple Pipeline\n",
     "\n",
-    "First, let's create a very simple pipeline that expects a `topic` from the user, and generates a summary about the topic with `google/flan-t5-large`. Feel free to modify the pipeline as you wish. Note that in this pipeline we are using a local model that we're getting from Hugging Face. We're using a relatively small, open-source LLM."
+    "First, let's create a very simple pipeline that expects a `topic` from the user, and generates a summary about the topic with `Qwen/Qwen2.5-1.5B-Instruct`. Feel free to modify the pipeline as you wish. Note that in this pipeline we are using a local model that we're getting from Hugging Face. We're using a relatively small, open-source LLM."
    ]
   },
   {