improve spacing to satisfy pre-commit hook

Author: edwardchalstrey1

.github/ISSUE_TEMPLATE/tutorial_request.yml

@@ -32,4 +32,4 @@ body:
       description: Add links to any research papers or other resources the author will need to write this tutorial.
       value: "`[Markdown link text](url)`"
     validations:
-      required: false
+      required: false

.gitignore

@@ -44,4 +44,4 @@ Gambit.app/*
 doc/tutorials/games/*.nfg
 doc/tutorials/games/*.efg
 *.dmg
-Gambit.app/*
+Gambit.app/*

tests/test_tutorials.py

@@ -49,7 +49,7 @@ def test_execute_notebook(nb_path):
     # Skip notebook execution tests on Python < 3.12 (notebooks may require newer kernels/deps)
     if sys.version_info < (3, 12):
         pytest.skip("Notebook execution tests require Python 3.12 or newer")
-    
+
     nb = nbformat.read(str(nb_path), as_version=4)
 
     # Prefer the notebook's kernelspec if provided, otherwise let nbclient pick the default.