doc: fix link about bifurcated model in Linux guide
doc: fix link about bifurcated model in Linux guide

Since dpdksummit.com does not exist anymore,
the old link redirected to https://www.dpdk.org/events/.

Cc: stable@dpdk.org

Signed-off-by: Ali Alnubani <cf6d2c19745ffe2f5051227a159da6be2e1adaa2@mellanox.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk