doc: fix release notes for bnxt
doc: fix release notes for bnxt

Fixes: 94eb699bc82e ("net/bnxt: support flow mark action")

Signed-off-by: Ajit Khaparde <01965fbd61169dc18f3fb5e13de7f67d298f8924@broadcom.com>

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