Fix indentation issue

Author: davepeck

peps/pep-0750.rst

@@ -16,7 +16,6 @@ Post-History: `09-Aug-2024 <https://discuss.python.org/t/60408>`__,
               `21-Oct-2024 <https://discuss.python.org/t/60408/226>`__,
               `18-Nov-2024 <https://discuss.python.org/t/71594>`__
 
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 Abstract
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