Pull request: all: upd go, minor imp

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

Squashed commit of the following:

commit c5b9e2a15290760b2782acc0c08df3fe57356500
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Fri Dec 10 14:23:28 2021 +0300

    all: upd go, minor imp

internal/aghos/os.go

@@ -118,8 +118,8 @@ func PIDByCommand(command string, except ...int) (pid int, err error) {
 }
 
 // parsePSOutput scans the output of ps searching the largest PID of the process
-// associated with cmdName ignoring PIDs from ignore.  Valid r's line shoud be
-// like:
+// associated with cmdName ignoring PIDs from ignore.  A valid line from
+// r should look like these:
 //
 //    123 ./example-cmd
 //   1230 some/base/path/example-cmd

internal/dnsforward/dnsforward.go

@@ -559,7 +559,7 @@ func (s *Server) IsRunning() bool {
 	return s.isRunning
 }
 
-// srvClosedErr is returned when the method can't complete without unacessible
+// srvClosedErr is returned when the method can't complete without inacessible
 // data from the closing server.
 const srvClosedErr errors.Error = "server is closed"
 

internal/filtering/filtering.go

@@ -651,7 +651,7 @@ func newRuleStorage(filters []Filter) (rs *filterlist.RuleStorage, err error) {
 
 	rs, err = filterlist.NewRuleStorage(lists)
 	if err != nil {
-		return nil, fmt.Errorf("creating rule stroage: %w", err)
+		return nil, fmt.Errorf("creating rule storage: %w", err)
 	}
 
 	return rs, nil