Link to docs is 404. Add target landing page.
Link to docs is 404. Add target landing page.

Add `/overview/` to URL.

Signed-off-by: Dan Schaper <e0d147bd42e37db009403956b01c29435870b195@pi-hole.net>
jacobsalmela/AdminLTE,jacobsalmela/AdminLTE,jacobsalmela/AdminLTE,jacobsalmela/AdminLTE