Add `library_name` to model card metadata

This PR improves the model card by adding the `library_name: transformers` metadata tag. This ensures that the model's compatibility with the Hugging Face Transformers library is explicitly stated, enabling the "how to use" widget on the model page with an automated code snippet.

README.md

@@ -1,17 +1,18 @@
 ---
-license: mit
 base_model: fredzzp/open-dcoder-0.5B
+datasets:
+- code
+language:
+- code
+license: mit
+pipeline_tag: text-generation
 tags:
 - code-generation
 - diffusion-model
 - masked-diffusion
 - code-correction
 - python
-datasets:
-- code
-language:
-- code
-pipeline_tag: text-generation
+library_name: transformers
 ---
 
 # CDLM-0.5B
@@ -112,5 +113,4 @@ This model is licensed under the MIT License. See the [LICENSE](LICENSE) file fo
 
 For questions and issues, please contact:
 
-**Shuibai Zhang** <[email protected]>
-
+**Shuibai Zhang** <[email protected]>