update: Use ALL_DIRS for completion

It does not change the outcome, but it is nicer
to use the same value in coomplete as for the
main function.

Closes: #2534
Approved by: alexlarsson
This commit is contained in:
Internal Server Error - Gitea: Git with a cup of tea
500 Internal Server Error

Gitea Version: 1.28.0+dev-477-g8b6ad49a5f