Update design/mvp/WORLD.md

Co-authored-by: Dan Gohman <[email protected]>

Author: fibonacci1729

design/mvp/WORLD.md

@@ -10,7 +10,7 @@ Conceptually `world` documents act as a contract between runtimes and components
 
 ## Top-level items
 
-A `world` document is a sequence of items specified at the top level. These items come one after another and it's recommended to separate them with newlines for readability but  this isn't required.
+A `world` document is a sequence of items specified at the top level. These items come one after another and it's recommended to separate them with newlines for readability but this isn't required.
 
 Conceretely, the structure of a `world` file is: