With the removal of guides/introduction.rst the link on the API
reference landing page no longer works. Point it to the documents
introduction page instead.
Fixes: 860a3e3031 ("Documentation: Rework docs.rst into introduction.rst")
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>