Fix rename for "paper:optionally_flat_bedrock"

Author: Doc94

paper-server/patches/resources/data/minecraft/worldgen/material_rule/bedrock_floor.json.patch

@@ -5,7 +5,7 @@
    "type": "minecraft:condition",
    "if_true": {
 -    "type": "minecraft:vertical_gradient",
-+    "type": "paper:optionally_flat_bedrock_condition_source",
++    "type": "paper:optionally_flat_bedrock_material_condition",
 +    "is_roof": false,
      "false_at_and_above": {
        "above_bottom": 5

paper-server/patches/resources/data/minecraft/worldgen/material_rule/bedrock_roof.json.patch

@@ -5,7 +5,7 @@
      "type": "minecraft:not",
      "invert": {
 -      "type": "minecraft:vertical_gradient",
-+      "type": "paper:optionally_flat_bedrock_condition_source",
++      "type": "paper:optionally_flat_bedrock_material_condition",
 +      "is_roof": true,
        "false_at_and_above": {
          "below_top": 0