doc: fix a typo in EAL guide
doc: fix a typo in EAL guide

This patch fixes a trivial typo in DPDK programmer's guide:
it should be rte_cpu_get_features() instead of rte_cpu_get_feature().

Signed-off-by: Rami Rosen <7f5a0f674127d5d5a91ecfe3b41be456d732af3d@intel.com>
Acked-by: John McNamara <af31595c36a4239b9676e9b3a777d3e2f15a6c4d@intel.com>

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