doc: fix double space in modules.md

Signed-off-by: Daijiro Wachi <daijiro.wachi@gmail.com>
PR-URL: #63512
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: watilde

doc/api/modules.md

@@ -286,7 +286,7 @@ console.log(distance); // undefined
 ```
 
 Notice in the example above, when the `module.exports` export name is used, named exports
-will be lost to CommonJS consumers. To allow  CommonJS consumers to continue accessing
+will be lost to CommonJS consumers. To allow CommonJS consumers to continue accessing
 named exports, the module can make sure that the default export is an object with the
 named exports attached to it as properties. For example with the example above,
 `distance` can be attached to the default export, the `Point` class, as a static method.