[Chapel Merge] `no doc` an internal formatted IO helper

Branch: refs/heads/master
Revision: 0be52ba
Author: e-kayrakli
Log Message:

Merge pull request #17664 from e-kayrakli/io-helper-nodoc

no doc an internal formatted IO helper

I have added this helper in Refactor the param loop in writef by e-kayrakli · Pull Request #16303 · chapel-lang/chapel · GitHub to
improve compilation speed. It is only used internally and not user-facing. It
should have been no doc'ed from the beginning.

[Trivial, not reviewed]

Modified Files:
M modules/standard/IO.chpl

Compare: https://github.com/chapel-lang/chapel/compare/f56d9832ce00...0be52babdb23