DNS doc: remove whitespace

Commit f305559292e6ecfd35740268e69b10cf99089fb2 added a whitespace.
TrivialFix

Change-Id: I01b793ed9087042698e59926ae8068fe96afed83
This commit is contained in:
Gary Kotton 2018-02-19 23:40:28 -08:00
parent 868b5ede79
commit 4875ac672f