Update hf_pretrained_sd15_512_inference.ipynb

fix typo

torch-neuronx/inference/hf_pretrained_sd15_512_inference.ipynb

@@ -10,7 +10,7 @@
     "\n",
     "In this notebook, you will compile and run the [`runwayml/stable-diffusion-v1-5`](https://huggingface.co/runwayml/stable-diffusion-v1-5) text-to-image pipeline (Stable Diffusion 1.5) on AWS Neuron hardware to \n",
     "generate images of size 512x512 pixels.\n",
-    "To run the pipeline, you will use the dedicated [`StableDiffutionPipeline`](https://huggingface.co/docs/diffusers/api/pipelines/stable_diffusion/text2img#diffusers.StableDiffusionPipeline) \n",
+    "To run the pipeline, you will use the dedicated [`StableDiffusionPipeline`](https://huggingface.co/docs/diffusers/api/pipelines/stable_diffusion/text2img#diffusers.StableDiffusionPipeline) \n",
     "abstraction from HuggingFace's [`diffusers`](https://huggingface.co/docs/diffusers/index) library.\n",
     "\n",
     "Diffusion models are peculiar in the sense that they do not consist of a single model but of a collection of models and stateless components orcherstrated into a pipeline. Running a diffusion pipeline on Neuron therefore \n",