[autofix.ci] apply automated fixes

Author: autofix-ci[bot]

src/mne_lsl/player/player_lsl.pyi

@@ -60,7 +60,7 @@ class PlayerLSL(BasePlayer):
     the chunk are pushed on the annotation :class:`~mne_lsl.lsl.StreamOutlet`. The
     :class:`~mne.Annotations` are pushed with a timestamp corrected for the annotation
     onset in regards to the chunk beginning. However, :class:`~mne.Annotations` push is
-    *not* delayed until the the annotation timestamp or until the end of the chunk.
+    *not* delayed until the annotation timestamp or until the end of the chunk.
     Thus, an :class:`~mne.Annotations` can arrived at the client
     :class:`~mne_lsl.lsl.StreamInlet` "ahead" of time, i.e. earlier than the current
     time (as returned by the function :func:`~mne_lsl.lsl.local_clock`). Thus, it is
@@ -89,6 +89,12 @@ class PlayerLSL(BasePlayer):
     streamed on a channel correspond to the duration of the :class:`~mne.Annotations`.
     Thus, a sample on this :class:`~mne_lsl.lsl.StreamOutlet` is a one-hot encoded
     vector of the :class:`~mne.Annotations` description/duration.
+
+    .. note::
+
+        If the duration of an annotatation is ``0``, then the one-hot encoded vector
+        becomes a null vector. In this special case, the value ``-1`` is encoded and
+        denotes an annotation with a duration of ``0``.
     """
 
     _name: Incomplete