Update discussion.md

DISC-10 fix.

discussion.md

@@ -107,7 +107,7 @@ This page will be updated with discussion worksheets and solutions throughout th
     <td>Discussion 10</td>
       <td>Python Data Structues</td>
       <td><a href="https://docs.google.com/document/d/1lnQwwWwr6ucKYOHBmtKGqcg5hCzw9wqhJy-Zs-FvgkI/edit?usp=sharing">worksheet</a></td>
-      <td><a href="https://docs.google.com/document/d/1lnQwwWwr6ucKYOHBmtKGqcg5hCzw9wqhJy-Zs-FvgkI/edit?usp=sharing">solutions</a></td>
+      <td><a href="https://docs.google.com/document/d/1LZu7_H2aCtVCsKm53sWEYpp8WFGw9PEBti5YlwAtYOs/edit">solutions</a></td>
       <td><a href="https://drive.google.com/file/d/1FdQWd3Ezkjldv7tLDoygK3ZgfVPg__lU/view">recording</a></td>
       <td><a href="https://drive.google.com/file/d/137_mqwoEGy7ghh8Bg8D_HJGAuE_-zt2F/view?usp=sharing">slides</a></td>
     </tr>