Update "Delete remote tag" to match delete remote branch

[hyperupcall]

The --delete flag can be used for deleting both remote branches and tags. This updates "Delete remote tag" to do that. It also adds a deletion syntax without the refs/tags so it's known that it's usually not necessary.

[baooab]

git push origin --delete refs/tags/<tag-name> feels a bit redundant. It can be changed to the following, which will be more concise.

---

git push origin --delete <tagname>

Alternatives:

git push origin :refs/tags/<tag-name>

[hyperupcall]

@baooab Agreed! Made those edits