Mixed up use of Top/Left Bottom/Right in JoinHorizontal and JoinVertical calls

[shaunco]

These JoinHorizontal calls should use lipgloss.Top or lipgloss.Bottom rather than lipgloss.Left or lipgloss.Right:

• lipgloss/internal/tree/renderer.go

  Line 100 in 87dd58d

  lipgloss.JoinHorizontal(

These JoinVertical calls should use lipgloss.Left or lipgloss.Right rather than lipgloss.Top or lipgloss.Bottom:

• lipgloss/internal/tree/renderer.go

  Line 84 in 87dd58d

  nodePrefix = lipgloss.JoinVertical(

• lipgloss/internal/tree/renderer.go

  Line 91 in 87dd58d

  multineLinePrefix = lipgloss.JoinVertical(

• lipgloss/internal/tree/renderer.go

  Line 129 in 87dd58d

  return lipgloss.JoinVertical(lipgloss.Top, strs...)

[bashbunni]

Thank you! This is fixed in #342 will link this issue to that PR so it'll close once merged :)