fix mdl complaints

docs.it4i/salomon-upgrade.md

docs.it4i/salomon/shell-and-data-access.md

docs.it4i/software/chemistry/molpro.md

docs.it4i/software/chemistry/phono3py.md

docs.it4i/software/isv_licenses.md

docs.it4i/software/lang/julialang.md

docs.it4i/software/mpi/ompi-examples.md

docs.it4i/software/numerical-languages/octave.md