Remove {. in ReScript version

Author: ryyppy

pages/docs/manual/latest/generate-converters-accessors.mdx

@@ -127,7 +127,7 @@ type coordinates = {
 Generates 2 functions of the following types:
 
 ```res
-let coordinatesToJs: coordinates => {. "x": int, "y": int};
+let coordinatesToJs: coordinates => {"x": int, "y": int};
 
 let coordinatesFromJs: {.. "x": int, "y": int} => coordinates;
 ```