Adding api version to urls in Hello world

[vinodMS]

The Hello world example in the user guide demonstrates how a translation request can be created, modified, and retrieved. The specified urls in the example are as follows,
https://www.abctranslations.com/translation
https://www.abctranslations.com/translation/2b575fdc-f6af-4b9e-850d-9dc0884c6595

The specification describes the use of API versioning and how it is added as part of the URL of the request. For consistency and to not have the reader confused, it would be better add the version to URLs used in the example.
https://www.abctranslations.com/v2.0/translation
https://www.abctranslations.com/v2.0/translation/2b575fdc-f6af-4b9e-850d-9dc0884c6595