Improve model card

This PR improves the model card by adding the library_name and pipeline_tag metadata tags.

Also, if you include the model weights at the root of the repo, model downloads will work.

README.md

@@ -1,7 +1,6 @@
 ---
-license: mit
-library_name: diffusers
-pipeline_tag: text-to-video
+library_name: transformers
+pipeline_tag: text-generation
 ---
 
-Model for T2V Sketch LoRA in Paper: arxiv.org/abs/2411.10818
+The long-form instruction model introduced in [LongDPO](https://huggingface.co/papers/2502.02095) to improve long-form generation abilities.