Update remote debugging overview with table

[st0012]

I think using a table can make this section even more easier to understand while providing more information.

Before

After

[ko1]

I didn't check nvim-dap-ruby, but is it work enough?

[st0012]

@ko1 Yes I think it already works for basic features (I didn't test it intensively though). But based on related issue reports like #523, I think there are users actively using it already.

[ko1]

I'll test before merge it.

[ko1]

I couldn't try nvim-dap-ruby because of my lack of nvim knowledge...

[st0012]

I have removed NeoVim from the table.

[ko1]

I wait step-by-step nvim tutorial...