add references

docs/source/_ml_basics/transformer.rst

@@ -90,11 +90,11 @@ References
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 - **Original Attention paper:** Vaswani. `Attention is all you need. <https://doi.org/10.48550/arXiv.1706.03762>`_ Advances in neural information processing systems. 2017.
 - **Blogpost on Attention Machanism:** 
-  - `Visualizing A Neural Machine Translation Model (Mechanics of Seq2seq Models With Attention) <https://jalammar.github.io/visualizing-neural-machine-translation-mechanics-of-seq2seq-models-with-attention/>`_
-  - `Understanding and Coding the Self-Attention Mechanism of Large Language Models From Scratch <https://sebastianraschka.com/blog/2023/self-attention-from-scratch.html>`_
+   - `Visualizing A Neural Machine Translation Model (Mechanics of Seq2seq Models With Attention) <https://jalammar.github.io/visualizing-neural-machine-translation-mechanics-of-seq2seq-models-with-attention/>`_
+   - `Understanding and Coding the Self-Attention Mechanism of Large Language Models From Scratch <https://sebastianraschka.com/blog/2023/self-attention-from-scratch.html>`_
 - **Blogpost on Transformers:** 
-  - `The Illustrated Transformer <http://jalammar.github.io/illustrated-transformer/>`_
-  - `Transformer Explainer <https://poloclub.github.io/transformer-explainer/>`_
+   - `The Illustrated Transformer <http://jalammar.github.io/illustrated-transformer/>`_
+   - `Transformer Explainer <https://poloclub.github.io/transformer-explainer/>`_
 - **Tutorials on Building a Transformer with PyTorch:** 
-  - `Building a Transformer with PyTorch <https://www.datacamp.com/tutorial/building-a-transformer-with-py-torch>`_
-  - `The Annotated Transformer <http://nlp.seas.harvard.edu/annotated-transformer/>`_
+   - `Building a Transformer with PyTorch <https://www.datacamp.com/tutorial/building-a-transformer-with-py-torch>`_
+   - `The Annotated Transformer <http://nlp.seas.harvard.edu/annotated-transformer/>`_