dark_prismarine_stairs could be converted to stone_brick_stairs instead of cobblestone_stairs

[joserobjr]

Is your feature request related to a problem? Please describe. The stone_brick_stairs matches the the dark prismarine theme better then cobblestone stairs. Cobblestone seems to raw to dark prismarine blocks.

Describe the solution you'd like Convert dark_prismarine_stairs to stone_brick_stairs

Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered. No alternatives..

Additional context Add any other context or screenshots about the feature request here.