Add changelog entry

tsbinns · tsbinns · commit 997050791637 · 2025-08-12T17:33:20.000+01:00
diff --git a/doc/changes/dev/13375.bugfix.rst b/doc/changes/dev/13375.bugfix.rst
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+Fix bug with :func:`mne.grand_average` not working with :class:`mne.time_frequency.Spectrum` objects, by `Thomas Binns`_.

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	`1`	+Fix bug with :func:`mne.grand_average` not working with :class:`mne.time_frequency.Spectrum` objects, by `Thomas Binns`_.