docs: fix broken --check-filename self-link in bisync docs

Browse Source

The link pointed at a bare relative path (--check-filename) instead of
the in-page anchor for the ### --check-filename heading further down the
page, so it 404s on the rendered docs site. Point it at #check-filename
(Hugo strips leading dashes when generating header anchors).

---------

Co-authored-by: no-hup <19599684+no-hup@users.noreply.github.com>
(cherry picked from commit c3ba184611)

...

This commit is contained in:

500 Internal Server Error

Gitea Version: 1.28.0+dev-477-g8b6ad49a5f