Update moving-types.md

Author: basarat

docs/types/moving-types.md

@@ -88,7 +88,6 @@ type Colors = keyof typeof colors;
 let color: Colors; // same as let color: "red" | "blue"
 color = 'red'; // okay
 color = 'blue'; // okay
-color = 'reddish; // Error: Type '"reddish"' is not assignable to type '"red" | "blue"'
 color = 'anythingElse'; // Error: Type '"anythingElse"' is not assignable to type '"red" | "blue"'
 ```