Update documentation that does not reflect correct state.

[kyzn]

Hi! Thanks for maintaining data-dpath. This was my October CPAN-PRC assignment, and I've only done some documentation updates.

This is from RT: https://rt.cpan.org/Public/Bug/Display.html?id=120594
I've tried to reword explanation of new context of "_search".
Let me know if it needs more updates.

Thanks!

[renormalist]

Phew, I totally lost track of the referred RT ticket. I need to understand the tickets problem first to decide if I can fix the issue itself.

Thanks for the patch and reminder.

[kyzn]

Thanks for the update!