fix(disk): correctly replace /dev in /dev/mapper

Only replace the first instance of /dev in a /dev/mapper string.
Otherwise, if an LVM group is named dev it will replace that as well.

fixes: #1411

disk/disk_linux.go

@@ -341,7 +341,7 @@ func PartitionsWithContext(ctx context.Context, all bool) ([]PartitionStat, erro
 			}
 
 			if strings.HasPrefix(d.Device, "/dev/mapper/") {
-				devpath, err := filepath.EvalSymlinks(common.HostDev(strings.Replace(d.Device, "/dev", "", -1)))
+				devpath, err := filepath.EvalSymlinks(common.HostDev(strings.Replace(d.Device, "/dev", "", 1)))
 				if err == nil {
 					d.Device = devpath
 				}