docs(details): fix typos (#7484)
Signed-off-by: bjsylvia <bjsylvia@163.com>
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@@ -178,7 +178,7 @@ To unsubscribe a widget from a given or all subject use:
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.. code-block:: c
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lv_obj_remove_from_subject(widget, subject); /* `subject` can be NULL to unsubcribe from all */
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lv_obj_remove_from_subject(widget, subject); /* `subject` can be NULL to unsubscribe from all */
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.. _observer_subject_groups:
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