Set `library_name` to `tf-keras`.

Model 'keras-dreambooth/dreambooth-pug-ace' seems to be compatible only with "Keras 2" and not "Keras 3". To distinguish them, models compatible with legacy Keras 2.x should be tagged as `tf-keras` while models compatible with Keras 3.x are tagged as `keras`.

This PR updates the model card to replace the explicit `library_name: keras` metadata which is now outdated by `library_name: tf-keras`. Updating this metadata will facilitate its discoverability and usage.

For more information about `keras` and `tf-keras` library names, check out this pull request: https://github.com/huggingface/huggingface.js/pull/774.

README.md

@@ -1,7 +1,10 @@
 ---
+datasets:
+- nielsgl/dreambooth-ace
+library_name: tf-keras
 license: creativeml-openrail-m
+pipeline_tag: text-to-image
 tags:
-- keras
 - diffusers
 - stable-diffusion
 - text-to-image
@@ -11,11 +14,7 @@ tags:
 inference: true
 widget:
 - text: a photo of puggieace dog on the beach, sunset in background
-datasets:
-- nielsgl/dreambooth-ace
-library_name: keras
-pipeline_tag: text-to-image
-emoji: 🐶 
+emoji: 🐶
 ---
 
 # KerasCV Stable Diffusion in Diffusers 🧨🤗