doc page changes

doc/src/Section_commands.txt

doc/src/Section_errors.txt

doc/src/Section_packages.txt

doc/src/Section_start.txt

doc/src/accelerate_intel.txt

doc/src/atom_style.txt

doc/src/bond_fene.txt

doc/src/bond_fene_expand.txt

doc/src/compute_fep.txt

doc/src/compute_property_local.txt

doc/src/fix_phonon.txt

doc/src/fix_property_atom.txt

doc/src/fix_rigid.txt

doc/src/fix_ti_spring.txt

doc/src/neb.txt

doc/src/pair_hbond_dreiding.txt

doc/src/pair_line_lj.txt

doc/src/pair_lubricateU.txt

doc/src/pair_thole.txt

doc/src/read_data.txt