method printf is misplaced

[JJ]

Problem or new feature

method printf ended up in the independent routines page, from wherever it was in the first place, probably Cool.

Still to go:

• [ ] method note
• [ ] method unpolar

Suggestions

Add it to where it belongs: Cool

[softmoth]

See also PR #3420 to help find it with p6doc -f printf; due to that bug it wasn't showing up!

[JJ]

Ditto for sprintf

[coke]

misplaced methods like this should also be caught by the xt/ test.

[coke]

The original is long gone, the other two are in a list that includes the sub variant as well. Closing ticket.