update tar_make docs to include tar_invalidate

[rmflight]

Prework

• Read and agree to the code of conduct and contributing guidelines.
• If there is already a relevant issue, whether open or closed, comment on the existing thread instead of posting a new issue.
• For any problems you identify, post a minimal reproducible example like this one so the maintainer can troubleshoot. Convenient helpers for this include targets::tar_reprex() and reprex::reprex(). A reproducible example is:
  • Runnable: post enough R code and data so any onlooker can create the error on their own computer.
  • Minimal: reduce runtime wherever possible and remove complicated details that are irrelevant to the issue at hand.
  • Readable: format your code according to the tidyverse style guide.

Description

I've personally been using {targets} for a while, and it took Twitter to realize that if I want to force a rerun of a particular target, I should use tar_invalidate(target_name), followed by tar_make().
I just answered the same question for someone else today.
This suggests that the docs for tar_make() should include a link to tar_invalidate(), and have it in the example as the quickest way to force a target to be rerun.

I've also forked and created a simple pull request.

[wlandau]

I edited a couple help files in ddf8b42, hopefully that helps.

[rmflight]

That should help, yes. Thanks for looking @wlandau !