fix: remove unnecessary blank line in create.mdx

Author: NonSwag

content/docs/worlds/manage/create.mdx

@@ -34,7 +34,6 @@ The following types are available:
 - `minecraft:fixed` - [Uses one specified biome everywhere.](https://minecraft.wiki/w/Dimension_definition#fixed)
 - `minecraft:debug` - [Debug all block states.](https://minecraft.wiki/w/Dimension_definition#debug)
 
-
 ## Preset
 
 World presets are a way to create worlds with specific settings.