fix lg2 error log parameter name

"INTERFACES" -> "INTERFACE" since it's only one.

Tested: Inspection only.

Tool Disclosure: bug was found (but not fixed) by a bot (CodeRabbit)

Change-Id: Ib48d41f44e96064a7211244803390ccb4160df50
Signed-off-by: Alexander Hansen <alexander.hansen@9elements.com>