Fix some typos and run gofmt on all .go files

server/backup/archiver.go

@@ -36,7 +36,7 @@ func (a *Archive) Create(dst string, ctx context.Context) (os.FileInfo, error) {
 	}
 
 	gzw, _ := gzip.NewWriterLevel(f, gzip.BestSpeed)
-	_ = gzw.SetConcurrency(1 << 20, maxCpu)
+	_ = gzw.SetConcurrency(1<<20, maxCpu)
 
 	defer gzw.Flush()
 	defer gzw.Close()

server/backup/backup_s3.go

@@ -77,10 +77,10 @@ func (s *S3Backup) generateRemoteRequest(rc io.ReadCloser) (*http.Response, erro
 	}
 
 	r.Body = rc
-	
+
 	log.WithFields(log.Fields{
 		"endpoint": s.PresignedUrl,
-		"headers": r.Header,
+		"headers":  r.Header,
 	}).Debug("uploading backup to remote S3 endpoint")
 
 	return http.DefaultClient.Do(r)