Language File Issue

I'm having an issue with modifying a language file using resource packs where the changes are not being applied. I've looked online for solutions but nothing seems to work. Textures included in the resource pack work fine, but the language file does not. Click this sentence to download the pack. Note that this specific version does not include textures as the textures I use are old Minecraft textures, which I am uncertain as to the legality of uploading.
For those who are interested, the contents of pack.mcmeta are as follows:{"pack":{"pack_format":6,"description":"Reverts changed names back to their original names."}}and the contents of \assets\minecraft\lang\en_us.json are as follows:{"block.minecraft.oak_door":"Door","block.minecraft.cut_sandstone":"Smooth Sandstone","block.minecraft.cut_red_sandstone":"Smooth Red Sandstone","block.minecraft.oak_wood":"DV Oak Log","block.minecraft.spruce_wood":"DV Spruce Log","block.minecraft.birch_wood":"DV Birch Log","block.minecraft.jungle_wood":"DV Jungle Log","block.minecraft.acacia_wood":"DV Acacia Log","block.minecraft.dark_oak_wood":"DV Dark Oak Log","block.minecraft.stripped_oak_wood":"Stripped DV Oak Log","block.minecraft.stripped_spruce_wood":"Stripped DV Spruce Log","block.minecraft.stripped_birch_wood":"Stripped DV Birch Log","block.minecraft.stripped_jungle_wood":"Stripped DV Jungle Log","block.minecraft.stripped_acacia_wood":"Stripped DV Acacia Log","block.minecraft.stripped_dark_oak_wood":"Stripped DV Dark Oak Log","block.minecraft.poppy":"Rose","block.minecraft.blue_orchid":"Cyan Rose","block.minecraft.smooth_stone":"Double Stone Slab","block.minecraft.smooth_sandstone":"DV Sandstone","block.minecraft.smooth_red_sandstone":"DV Red Sandstone","block.minecraft.stone_slab":"Natural Stone Slab","block.minecraft.smooth_stone_slab":"Stone Slab","block.minecraft.cut_sandstone_slab":"Smooth Sandstone Slab","block.minecraft.cut_red_sandstone_slab":"Smooth Red Sandstone Slab","block.minecraft.petrified_oak_slab":"Wood Slab","block.minecraft.oak_stairs":"Wood Stairs","block.minecraft.spruce_stairs":"Spruce Stairs","block.minecraft.birch_stairs":"Birch Stairs","block.minecraft.jungle_stairs":"Jungle Stairs","block.minecraft.acacia_stairs":"Acacia Stairs","block.minecraft.dark_oak_stairs":"Dark Oak Stairs","block.minecraft.oak_sign":"Sign","block.minecraft.oak_wall_sign":"Wall Sign","block.minecraft.oak_pressure_plate":"Wooden Pressure Plate","block.minecraft.stone_button":"Button","block.minecraft.oak_button":"Button","block.minecraft.white_terracotta":"White Stained Clay","block.minecraft.orange_terracotta":"Orange Stained Clay","block.minecraft.magenta_terracotta":"Magenta Stained Clay","block.minecraft.light_blue_terracotta":"Light Blue Stained Clay","block.minecraft.yellow_terracotta":"Yellow Stained Clay","block.minecraft.lime_terracotta":"Lime Stained Clay","block.minecraft.pink_terracotta":"Pink Stained Clay","block.minecraft.gray_terracotta":"Gray Stained Clay","block.minecraft.light_gray_terracotta":"Light Gray Stained Clay","block.minecraft.cyan_terracotta":"Cyan Stained Clay","block.minecraft.purple_terracotta":"Purple Stained Clay","block.minecraft.blue_terracotta":"Blue Stained Clay","block.minecraft.brown_terracotta":"Brown Stained Clay","block.minecraft.green_terracotta":"Green Stained Clay","block.minecraft.red_terracotta":"Red Stained Clay","block.minecraft.black_terracotta":"Black Stained Clay","block.minecraft.terracotta":"Hardened Clay","block.minecraft.oak_fence":"Fence","block.minecraft.oak_fence_gate":"Fence Gate","block.minecraft.pumpkin":"DV Pumpkin","block.minecraft.carved_pumpkin":"Pumpkin","block.minecraft.oak_trapdoor":"Trapdoor","block.minecraft.infested_stone":"Stone Monster Egg","block.minecraft.infested_cobblestone":"Cobblestone Monster Egg","block.minecraft.infested_stone_bricks":"Stone Brick Monster Egg","block.minecraft.infested_mossy_stone_bricks":Mossy Stone Brick Monster Egg","block.minecraft.infested_cracked_stone_bricks":"Cracked Stone Brick Monster Egg","block.minecraft.infested_chiseled_stone_bricks":"Chiseled Stone Brick Monster Egg","block.minecraft.chipped_anvil":"Slightly Damaged Anvil","block.minecraft.damaged_anvil":"Very Damaged Anvil","block.minecraft.daylight_detector":"Daylight Sensor","block.minecraft.potted_poppy":"Potted Rose","block.minecraft.potted_blue_orchid":"Potted Cyan Rose","block.minecraft.smooth_sandstone_stairs":"DV Sandstone Stairs","block.minecraft.smooth_red_sandstone_slab":"DV Red Sandstone Slab","block.minecraft.smooth_sandstone_slab":"DV Sandstone Slab","item.minecraft.cod_bucket":"Bucket of Fish","item.minecraft.tropical_fish_bucket":"Bucket of Clownfish","item.minecraft.redstone":"Redstone","item.minecraft.oak_boat":"Boat","item.minecraft.cod":"Raw Fish","item.minecraft.tropical_fish":"Clownfish","item.minecraft.cooked_cod":"Cooked Fish","item.minecraft.red_dye":"Rose Red","item.minecraft.green_dye":"Cactus Green","item.minecraft.yellow_dye":"Dandelion Yellow","item.minecraft.blue_dye":"Lapis Blue","item.minecraft.black_dye":"Ink Black","item.minecraft.brown_dye":"Cocoa Brown","item.minecraft.white_dye":"Bone White","block.minecraft.red_bed":"Bed","entity.minecraft.cod":"Fish","subtitles.entity.cod.death":"Fish dies","subtitles.entity.cod.flop":"Fish flops","subtitles.entity.cod.hurt":"Fish hurts"}I would try to add cleaner formatting, but that would be a lot of work, not be accurate to the pack itself, and could potentially mask issues in the file.