Typo in 4d authorization example

[Saurav Kumar Yadav]

Typo

The current POSTMAN and REST client example to add new note using authorization token is as follow:

Here the Authorization field has bearer but controllers/notes.js file is as follow:

Matching is done with 'Bearer ' as a result of which the POSTMAN request gives following error:

Fix

The example should use 'Bearer ' instead of 'bearer ' like:

The REST client example should be updated the same.