Update model card for AI Detect Model

This PR updates the model card to include the correct `pipeline_tag` (`text-classification`) and the `library_name` (`transformers`). This allows for easier discovery and usage of the model within the Hugging Face ecosystem. Additionally, the link to the paper is included.

README.md

@@ -1,14 +1,17 @@
 ---
-license: mit
+base_model:
+- allenai/longformer-base-4096
 datasets:
 - wangkevin02/LMSYS-USP
 language:
 - en
+license: mit
 metrics:
 - accuracy
-base_model:
-- allenai/longformer-base-4096
+pipeline_tag: text-classification
+library_name: transformers
 ---
+
 # AI Detect Model
 
 ## Model Description