Improve Moonshine ASR model card (license, links & markdown consistency)

This PR enhances the model card for the `moonshine-tiny-ar` model by:

- **Updating the license** from `other` to `apache-2.0` in the metadata, based on the permissive open-source nature mentioned in the paper abstract and alignment with common practices for such models on the Hub.
- **Adding a direct link to the Hugging Face paper page** (`https://huggingface.co/papers/2509.02523`) in the metadata for improved discoverability.
- **Correcting and expanding the initial links** in the model card content to accurately point to the main GitHub repository (`https://github.com/moonshine-ai/moonshine`) for both code and installation instructions. The paper link now also directly points to the Hugging Face paper page.
- **Adding a concise introductory sentence** to provide immediate context about the model's origin and purpose.
- **Ensuring markdown heading consistency** by replacing HTML `<h2>` and `<h3>` tags with their markdown equivalents (`##` and `###`) throughout the document for better rendering and readability.

These changes ensure the model card is more accurate, consistent, and user-friendly for researchers and developers.

README.md

@@ -1,14 +1,18 @@
 ---
-license: other 
 language:
-- ar 
+- ar
 library_name: transformers
+license: apache-2.0
 pipeline_tag: automatic-speech-recognition
-arxiv: https://arxiv.org/abs/2509.02523 
+arxiv: https://arxiv.org/abs/2509.02523
+paper: https://huggingface.co/papers/2509.02523
 ---
+
 # Moonshine
 
-[[Paper]](https://arxiv.org/abs/2509.02523) [[Installation]](https://github.com/usefulsensors/moonshine/blob/main/README.md)
+This model is part of the Moonshine family of tiny specialized Automatic Speech Recognition (ASR) models for edge devices, as described in [Flavors of Moonshine: Tiny Specialized ASR Models for Edge Devices](https://huggingface.co/papers/2509.02523).
+
+[[Paper]](https://huggingface.co/papers/2509.02523) | [[Code]](https://github.com/moonshine-ai/moonshine) | [[Installation]](https://github.com/moonshine-ai/moonshine)
 
 This is the model card for running the automatic speech recognition (ASR) models (Moonshine models) trained and released by Moonshine AI (f.k.a Useful Sensors.)
 
@@ -113,4 +117,4 @@ If you benefit from our work, please cite us:
       primaryClass={cs.CL},
       url={https://arxiv.org/abs/2509.02523}, 
 }
-```
+```