InputEvent_test: fix parameter comment style

It seems I missed these in change
Id5207b5a621c9a1ac0a46a8b2ff2bbf9aa43e726.

Bug: 245989146
Test: m inputflinger_tests
Flag: EXEMPT refactor
Change-Id: I23c2d4b33d8884868ba4b71cfe1e20ff76240089
1 file changed