Tweaking docs for Kokkos package

thread per MPI task, {half} neighbor lists will typically be faster,

just as it is for non-accelerated pair styles. Similarly, the {neigh/qeq}

keyword determines how neighbor lists are built for "fix qeq/reax/kk"_fix_qeq_reax.html.

If not explicitly set, the value of {neigh/qeq} will match {neigh}.

The {newton} keyword sets the Newton flags for pairwise and bonded

interactions to {off} or {on}, the same as the "newton"_newton.html

command in your input script or or via the "-pk intel" "command-line

switch"_Section_start.html#start_7.

For the KOKKOS package, the option defaults neigh = full, newton =

off, binsize = 0.0, and comm = device.  These settings are made

automatically by the required "-k on" "command-line

For the KOKKOS package, the option defaults neigh = full, neigh/qeq

 = full, newton = off, binsize = 0.0, and comm = device.  These settings

 are made automatically by the required "-k on" "command-line

switch"_Section_start.html#start_7.  You can change them bu using the

package kokkos command in your input script or via the "-pk kokkos"

"command-line switch"_Section_start.html#start_7.