thermal: core: Fix spelling mistake "Occurences" -> "Occurrences"

There is a spelling mistake in a seq_puts string. Fix it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://patch.msgid.link/20250227224006.660164-1-colin.i.king@gmail.com


Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>