OMS: fix typos in permission check message

Calls to enforceChangeOverlayPackagesPermission and handleIncomingUser
include a string parameter to be added to the exception thrown if the
caller doesn't hold the expected permission. Fix a couple of typos in
these strings.

Test: builds, boots
Change-Id: I70256c41d61f8af3735697c6e63644e5ac46fd84
1 file changed