link to tar_target() help page

[pat-s]

Prework

• I understand and agree to the code of conduct and the contributing guidelines.
• I have already submitted a discussion topic or issue to discuss my idea with the maintainer.

Related GitHub issues and pull requests

• Ref: "Storage formats" section in ?tar_option_set is located in other help page #837

Summary

Reading argument format in ?tar_option_set refers to the "Storage formats" section. However, this section is not within ?tar_option_set but in ?tar_target.
Maybe there's even a way to directly link to the section rather than to the start of the help page?

(I am aware that this creates redundancy in ?tar_target but the positive effect should weigh more?)

[wlandau]

Thanks for pointing out #837. I think I would rather handle it by having the tar_option_set() help file inherit the section, but thanks for the PR anyway. Fixed in ba45822.