fix indentation in salt.output.highstate

************* Module salt.output.highstate
salt/output/highstate.py:126: [W0311(bad-indentation), ] Bad indentation. Found 15 spaces, expected 16
salt/output/highstate.py:130: [W0311(bad-indentation), ] Bad indentation. Found 15 spaces, expected 16
Merge pull request #11053 from cvrebert/patch-1

fix indentation in salt.output.highstate