Update schedule.html

Author: AnanyaBal

schedule.html

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       <td sdnum="1033;0;@" align="left">Lecture 5<br>Monday 09/15/25</td>
-      <td align="left"><a href="">Attention and Transformers I</a></td>
+      <td align="left"><a href="https://canvas.cmu.edu/courses/49562/files/folder/slides?preview=13225778">Attention and Transformers I</a></td>
       <td align="left">
       <br>Readings:<br>#1: <a href="https://arxiv.org/abs/1706.03762">Ashish Vaswani et al. </a>
       <br>#2: <a href="https://arxiv.org/pdf/1409.3215">Ilya Sutskever, Oriol Vinyals, Quoc V. Le  </a>