OK example under WRONG 

In [this page](https://www.typescriptlang.org/docs/handbook/declaration-files/do-s-and-don-ts.html#overloads-and-callbacks), The "OK" example was duplicated in the "WRONG" example

<img width="727" alt="capture d ecran 2018-09-27 a 10 46 55" src="https://user-images.githubusercontent.com/1979087/46134253-be3b7d80-c242-11e8-8a70-d42946bd97b4.png">
