dt-bindings: net: sff,sfp: Fix "interrupts" property typo

The example has "interrupt" property which is not a defined property. It
should be "interrupts" instead. "interrupts" also should not contain a
phandle.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20241113225825.1785588-2-robh@kernel.org


Signed-off-by: Jakub Kicinski <kuba@kernel.org>