update index file (#336)

* update index file

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Joe Hamman <[email protected]>

Author: 3 people

workshops/scipy2025/index.ipynb

@@ -41,13 +41,13 @@
     "| Introduction and Setup | 1:30 (10 min) | | \n",
     "| The Xarray Data Model | 1:40 (50 min) | [Data structures Part 1](../../intermediate/datastructures-intermediate.ipynb)|\n",
     "|||[Data structures In Biology](../../intermediate/BiologyDataset.ipynb)| \n",
-    "|||[Data structures Part 2](../../fundamentals/01_datatree_hierarchical_data.ipynb)| \n",
+    "|||[Data structures Part 2](../../fundamentals/01_data_structures.md)| \n",
     "| *10 minute Break*  \n",
-    "| Computational Patterns | 2:30 (50 min) |  [Computational Patterns](../../intermediate/computation/01-high-level-computation-patterns.ipynb) <br> [Hierarchical computation](../../intermediate/computation/hierarchical_computation.ipynb) |  \n",
+    "| Computational Patterns | 2:30 (50 min) |  [Computational Patterns](../../intermediate/01-high-level-computation-patterns.ipynb) <br>  |  \n",
     "| *10 minute Break*  | \n",
-    "| Zarr & the cloud | 4:30 (50 min)  | [Intro to Zarr](../../intermediate/intro-to-zarr.ipynb) <br> [CMIP6 on the cloud](../../intermediate/remote_data/cmip6-cloud.ipynb) <br> |\n",
+    "| Storage formats | 3:30 (50 min) | [Storage formats](../../fundamentals/01.1_io.ipynb)  |  \n",
     "| *10 minute Break*  | \n",
-    "| Other storage formats | 3:30 (50 min) | [IO basics](../../fundamentals/01.1_io.ipynb) <br> [Data models](../../intermediate/storage_formats.ipynb) <br> [Custom backends](../../advanced/backends/backends.md) <br> |  \n",
+    "| Zarr & the cloud | 4:30 (50 min)  | [Intro to Zarr](../../intermediate/intro-to-zarr.ipynb) |\n",
     "| | End 5:30 | |"
    ]
   },