Add library name and link to code repository

This PR ensures the model card also includes a link to the Github repository and the `library_name` to ensure the "how to use" button is visible at the top right of the model card.

README.md

@@ -1,11 +1,11 @@
 ---
-library_name: transformers
-license: apache-2.0
 datasets:
 - monology/pile-uncopyrighted
 - MiniLLM/pile-diff_samp-qwen_1.8B-qwen_104M-r0.5
 language:
 - en
+library_name: transformers
+license: apache-2.0
 metrics:
 - accuracy
 pipeline_tag: text-generation