Update library tag for better download tracking and code snippets!

Hi, I'm Steven from HF, congrats on your new model! - I opened a small PR to help get clearer and better snippets + library_name

README.md

@@ -10,6 +10,7 @@ pipeline_tag: text-generation
 tags:
 - agent
 - coding
+library_name: transformers
 ---
 
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