changed the document project url in the using-vpp-and-kata.md and
runtime experimental README.md files.
Fixes: #2418
Signed-off-by: wangyongchao.bj <wangyongchao.bj@inspur.com>
This PR updates the experimental documentation with the proper reference
to kata 2.x
Fixes#2317
Signed-off-by: Gabriela Cervantes <gabriela.cervantes.tellez@intel.com>