[7.x] Correcting description for whereDoesntHave

[DoDSoftware]

The description of the example using whereDoesntHave with a nested relationship did not correctly describe the behavior of the function. Updated with correct description.

Originally brought to attention by 0xN0 via this SO Question

[MitchTalmadge]

Am I misunderstanding something? The SO question and the original change to the wording (24cc0f0) say that this query will:

• Fetch all posts with 0 comments AND,
• Fetch all posts where ALL comment authors are banned.

...the following query will retrieve all posts that have no comments, or where all comments are from banned authors:

But commit 50303d1 overwrites that wording change to suggest that the query will:

• Fetch all posts with 0 comments AND,
• Fetch all posts where AT LEAST ONE comment has an author that IS NOT banned.

...the following query will retrieve all posts that do not have comments and posts that have comments from authors that are not banned:

These are two completely different explanations. Which is correct? Why did this get changed & merged without further review?

Tangent to this -- what is the query trying to practically show, anyway? Why would you want to fetch posts with 0 comments or posts where a comment has not been banned? I feel like this entire situation could be resolved with a better example.