Fix more typos in examples

bench/FERMI/README

examples/README

examples/USER/atc/README

examples/USER/atc/fluids/in.bar1d_fluids

examples/USER/atc/thermal/in.bar1d

examples/USER/atc/thermal/in.bar1d_all_atoms

examples/USER/atc/thermal/in.bar1d_combined

examples/USER/atc/thermal/in.bar1d_flux

examples/USER/atc/thermal/in.bar1d_frac_step

examples/USER/atc/thermal/in.bar1d_hoover

examples/USER/atc/thermal/in.bar1d_interpolate

examples/USER/atc/thermal/in.bar1d_lumped

examples/USER/misc/srp/in.srp

examples/USER/phonon/3-3D-FCC-Cu-EAM/README

examples/USER/phonon/4-Graphene/README

examples/USER/tally/README

examples/VISCOSITY/README

examples/accelerate/README

python/examples/demo.py

python/examples/gui.py