Clarify pytest_ignore_collect docs

[nicoddemus]

Fixes #12383

[bluetech]

I understand why you wrote it the way you did, but "consider this path to be considered for collection" sounded a bit clumsy to me... I put a suggestion to lean solely on the "ignore" terminology. But either way is OK by me.

[nicoddemus]

I understand why you wrote it the way you did, but "consider this path to be considered for collection" sounded a bit clumsy to me... I put a suggestion to lean solely on the "ignore" terminology. But either way is OK by me.

Oh no I appreciate very much the suggestions -- I could not give this too much thought TBH, wanted to get the ball rolling and hoped a good review would improve my initial wording. So success! Hehehe.