fix(readme): add style to datachain banner (#10517)

README.rst

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-|Banner|
+🚀 Check out our new product `DataChain <https://github.com/iterative/datachain>`_ (and give it a ⭐!) if you need to version and process a large number of files. Contact us at support@iterative.ai to discuss commercial solutions and support for AI reproducibility and data management scenarios.
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+--------------------------
 
 `Website <https://dvc.org>`_
 • `Docs <https://dvc.org/doc>`_
@@ -17,8 +19,6 @@
 
 |
 
-🚀 Check out also our new product `DataChain <https://github.com/iterative/datachain>`_ (and give it a ⭐!) if you need to version and process a large number of files. Contact us at support@iterative.ai to discuss commercial solutions and support for reproducibility and data management for AI.
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 **Data Version Control** or **DVC** is a command line tool and `VS Code Extension`_ to help you develop reproducible machine learning projects:
 
 #. **Version** your data and models.