Update docs of info command

info args :pre

args = one or more of the following keywords: {out}, {all}, {system}, {communication}, {computes}, {dumps}, {fixes}, {groups}, {regions}, {variables}, {time}, or {configuration}

     {out} values = {screen}, {log}, {append} filename, {overwrite} filename:ul

args = one or more of the following keywords: {out}, {all}, {system}, {communication}, {computes}, {dumps}, {fixes}, {groups}, {regions}, {variables}, {styles}, {time}, or {configuration}

     {out} values = {screen}, {log}, {append} filename, {overwrite} filename

     {styles} values = {all}, {angle}, {atom}, {bond}, {compute}, {command}, {dump}, {dihedral}, {fix}, {improper}, {integrate}, {kspace}, {minimize}, {region} :ul

[Examples:]

info system

info groups computes variables

info all out log

info all out append info.txt :pre

info all out append info.txt

info styles all

info styles atom :pre

[Description:]

variables, their names, styles, definition and last computed value, if

available.

The {styles} category prints the list of styles available in LAMMPS. It

supports one of the following options to control what is printed out:

all

angle

atom

bond

compute

command

dump

dihedral

fix

improper

integrate

kspace

minimize

region :ul

The {time} category prints the accumulated CPU and wall time for the

process that writes output (usually MPI rank 0).

[Default:]

The {out} option has the default {screen}.

The {styles} option has the default {all}.