Correct a filename that had an underscore where a hyphen should have
been.
Cf. https://github.com/ceph/ceph/pull/61378.
Signed-off-by: Zac Dover <zac.dover@proton.me>
Note: The content of this file has been moved into the Ceph Developer Guide.
If you're interested in helping with the development of the dashboard, please
-see ``/doc/dev/developer_guide/dash_devel.rst`` or the `online version
+see ``/doc/dev/developer_guide/dash-devel.rst`` or the `online version
<https://ceph.readthedocs.io/en/latest/dev/developer_guide/dash-devel/>`_ for
details on how to set up a development environment and other development-related
topics.