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

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Author: pre-commit-ci[bot]

docs/user-guide/teacher-content/UU-ocean-of-future/Presentation.html

@@ -23,6 +23,7 @@ caption: Teaching material
 ---
 ILOs.ipynb
 ```
+
 ```{nbgallery}
 ---
 caption: UU Ocean of the Future