Update mne/utils/docs.py

doc: reformat reference channel note for clarity

Co-authored-by: Thomas S. Binns <t.s.binns@outlook.com>

Author: Dpereaptkhamur-13

mne/utils/docs.py

@@ -4106,11 +4106,12 @@ def _reflow_param_docstring(docstring, has_first_line=True, width=75):
     EEG signal by setting ``ref_channels='average'``. Bad EEG channels are
     automatically excluded if they are properly set in ``info['bads']``.
 
-    "add_reference_channels_note": """.. note:: When performing average referencing in sensor-space analyses and the
-        original reference electrode is not present as a zero-filled channel,
-        this must first be added using :func:`~mne.add_reference_channels`
-        before calling :func:`~mne.set_eeg_reference` to avoid biasing the
-        reference :footcite:`AppelhoffSanderson2023`. """,
+.. note::
+    When performing average referencing in sensor-space analyses and the original
+    reference electrode is not present as a zero-filled channel, this must first be
+    added using :func:`~mne.add_reference_channels`, before calling
+    :func:`~mne.set_eeg_reference`. This is necessary to avoid biasing the reference
+    :footcite:`AppelhoffSanderson2023`.
 
 - A single electrode:
     Set ``ref_channels`` to a list containing the name of the channel that