Fix error in translated string

This error has been fixed correctly with imported translations
in dev branches, but those changes get skipped when automerging
to the *-plus-aosp branches.  Manually fix the errors.

Bug: 135617299
Test: m SystemUI
Change-Id: I8fa1903d5bd862d30aae62df3d7f40da6f0821f2
Merged-In: Ib5716af725f929fab433a763ae31b47e0cd0befe