"Your first Booster app in 10 minutes" need to say that the project name needs to be globally unique

[Kalm004]

Documentation bug, improvement

In the FAQ there is mentioned the problem with the unique name of the S3, that is based on the project's name. But, while following the "Your first Booster app in 10 minutes" guide, it tells you the create a project named "boosted-blog". I would say that this guide should mentioned that the project name should be globally unique (as an S3 identifier will be generated using it and it needs to be globally unique).

[NickSeagull]

As an alternative, we could do #954