CRUD - Update a single tutorial

[toshihue]

• Update a single tutorial by _id
• Change the string id of the tutorial model to primitive.ObjectID

[naoharu]

@toshihue Thanks for the pull request. I think it is a good request in terms of changes. For ease of working on it later, could you please include an example in the original Issue how to use postman to send the json when updating?

[toshihue]

@toshihue Thanks for the pull request. I think it is a good request in terms of changes. For ease of working on it later, could you please include an example in the original Issue how to use postman to send the json when updating?

@naoharu Good suggestion! I have added the example request to https://github.com/toshi-nao/web-app-sample/issues/4. (FYI: Postman can export curl commands)

[naoharu]

@toshihue Thanks for updating Issue. it works well!

Initial data.

updating by _id

updated