doc: fix emulated device names in e1000 guide
doc: fix emulated device names in e1000 guide

The device name should be 82574L Gigabit Ethernet Controller.
The patch also remove a redundant "*".

Fixes: fc1f2750a3ec ("doc: programmers guide")
Cc: stable@dpdk.org

Signed-off-by: William Tu <6aed7d52531456413f7e5a799f9150cf02425e08@gmail.com>
Acked-by: Haiyue Wang <037d5f2d0d83548aebdad8ba0c69c0b30ec44c86@intel.com>

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