Add missing newline to dumpsys tare

This change adds a newline to the end of the dumpsys tare output.

Test: Capture a bug report and verify that the reported duration for the
      dumpsys tare section isn't on the same line as the final line of
      the dumpsys tare output.
Test: Run dumpsys tare and check that the newline exists.
Bug: 278081288
Change-Id: Iad3b3f9297aad576909db34263b481e671452480