Add pipeline tag and library name

This PR adds the missing pipeline tag and library name metadata.

README.md

@@ -1,9 +1,11 @@
 ---
-license: apache-2.0
 datasets:
-  - openbmb/RLPR-train
+- openbmb/RLPR-train
 language:
-  - en
+- en
+license: apache-2.0
+pipeline_tag: text-generation
+library_name: transformers
 ---
 
 # Model Card for RLPR-Qwen2.5-7B-Base
@@ -84,5 +86,4 @@ If you find our model/code/paper helpful, please consider citing our papers 📝
       archivePrefix={arXiv},
       primaryClass={cs.LG},
       url={https://arxiv.org/abs/2506.18254}, 
-}
-```
+}