Add description and link to paper for Reasoning to Learn from Latent Thoughts

This PR adds a description and a link to the original paper "[Reasoning to Learn from Latent Thoughts](https://huggingface.co/papers/2503.18866)" to improve dataset documentation and discoverability.

README.md

@@ -1,5 +1,11 @@
 ---
 license: apache-2.0
+task_categories:
+- text-generation
+tags:
+- mathematics
+- reasoning
+- latent-thoughts
 dataset_info:
 - config_name: finemath_4plus_final_2b_separated_bootstrap_split
   features:
@@ -273,3 +279,5 @@ configs:
   - split: validation
     path: finetune_math/validation-*
 ---
+
+This dataset is associated with the paper [Reasoning to Learn from Latent Thoughts](https://huggingface.co/papers/2503.18866). It contains data used for pretraining language models with a focus on improving data efficiency by modeling and inferring latent thoughts underlying the text generation process, particularly in mathematical reasoning tasks.