Pull request: all: imp docs, names

Merge in DNS/adguard-home from imp-text to master

Squashed commit of the following:

commit fa7d64014fb2ac379e1c137eaccc7aefca86419d
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Fri Jun 11 17:09:00 2021 +0300

    all: imp docs, names

internal/aghnet/net_darwin.go

@@ -13,8 +13,8 @@ import (
 	"github.com/AdguardTeam/golibs/errors"
 )
 
-// hardwarePortInfo - information obtained using MacOS networksetup
-// about the current state of the internet connection
+// hardwarePortInfo contains information about the current state of the internet
+// connection obtained from macOS networksetup.
 type hardwarePortInfo struct {
 	name      string
 	ip        string