[MCPE-123605] Some strings in 1.16.230 are different from the previous or incorrect

There are some strings in 1.16.230 that are different from the previous ones, or not correct at all.

Here's a list :

Translation key	Current name	Suggested name	Reason
`tile.cobbled_deepslate_double_slab.name`	Cobbled Deepslate Double Slab	Cobbled Deepslate Slab	`tile.double_stone_slab.name=Stone Slab`
`tile.polished_deepslate_double_slab.name`	Polished Deepslate Double Slab	Polished Deepslate Slab	Same as above
`tile.deepslate_tile_double_slab.name`	Deepslate Tile Double Slab	Deepslate Tile Slab	Same as above
`tile.deepslate_brick_double_slab.name`	Deepslate Brick Double Slab	Deepslate Brick Slab	Same as above
`tile.deepslate_lapis_ore.name`	Deepslate Lapis Ore	Deepslate Lapis Lazuli Ore	Java Edition
`item.milk.name`	Milk	Milk Bucket	Java Edition, changed in 18w20a
`tile.lit_deepslate_redstone_ore.name`	Lit Deepslate Redstone Ore	Delete	Other lightable blocks also have corresponding lit variants, but none of them appear in the language file.
`hbui.CreateNewWorld.advanced.firesSpreadsDescription`	Fire can spread between entities	Fire can spread between blocks	Incorrect, fire cannot spread between entities.
`hbui.CreateNewWorld.advanced.firesSpreadsTitle`	Fire spreads	Update fire	Java Edition
`hbui.CreateNewWorld.advanced.immediateRespawnTitle`	Immediate respawn	Respawn immediately	Java Edition
`hbui.CreateNewWorld.cheats.entitiesDropLootTitle`	Entities drop loot	Drop entity equipment	Java Edition
`hbui.CreateNewWorld.advanced.tileDropsTitle`	Tile drops	Drop blocks	Java Edition