Improve wording of starting a new app in tutorial 1.

[Kevin Crum]

In tutorial 01 (​https://docs.djangoproject.com/en/3.0/intro/tutorial01/) after running start project the tutorial tells the user to add an app to the project. The tutorial uses plain English to state

Your apps can live anywhere on your Python path. In this tutorial, we’ll create our poll app right next to your manage.py file so that it can be imported as its own top-level module, rather than a submodule of mysite.

The problem lies with the use of 'right next to'.

While the tutorial does say 'top-level' that nuance can be missed by many. The tutorial also shows the directory tree of the project before adding the app and it is not entirely clear what directory one is in when they run the add app command.

I feel that if we have the language (eg the word directory) to describe where the command should be run and where the files should be this can help remove ambiguity that lives in a crucial step of the tutorial.

[Victor Moura]

I agree that the term "in the same directory" or "in the same folder" would be more clear

[Mariusz Felisiak]

This sounds a really minor to me, but let's have it.

​PR

[Mariusz Felisiak <felisiak.mariusz@…>]

In 1628b35b:

Fixed #31385 -- Improved wording in tutorial 1.

[Mariusz Felisiak <felisiak.mariusz@…>]

In 6de7a600:

[3.0.x] Fixed #31385 -- Improved wording in tutorial 1.

Backport of 1628b35b586e07ea47a82713192d0e4662268686 from master