Clarify how changing the space path is impacted by other spaces

[rodrcastro]

Within an organization you can't have multiple spaces with the same path.

For example, if someone has 3 products, and they want to translate those 3 product docs to English and Portuguese, they might want to use the path to the space as "pt" and "en" in all of them.

It would look like this:

Product A Collection
-> English docs
-> Portuguese docs

Product B Collection
-> English docs
-> Portuguese docs

Product C Collection
-> English docs
-> Portuguese docs

If they want to use "pt" as the path for all of the Portuguese spaces for example, it won't be possible, even if they are part of different collections.