Merge pull request #495 from akohlmey/doc-fixes

doc/src/compute_saed.txt

doc/src/dihedral_spherical.txt

doc/src/fix_gle.txt

doc/src/fix_langevin_drude.txt

doc/src/manifolds.txt

doc/src/package.txt

doc/src/pair_morse.txt

doc/src/pair_python.txt

doc/src/pair_snap.txt

doc/src/pair_zero.txt

doc/src/tutorial_pylammps.txt

src/KSPACE/pppm.cpp

src/MANYBODY/pair_comb3.cpp

src/MANYBODY/pair_eam.cpp

src/MC/pair_dsmc.cpp

src/USER-OMP/fix_nve_sphere_omp.cpp

src/USER-OMP/npair_full_bin_ghost_omp.h

src/USER-OMP/npair_full_bin_omp.h

src/USER-OMP/npair_full_multi_omp.h

src/USER-OMP/npair_full_nsq_ghost_omp.h