To avoid the very broad columns in the [software overview page](https://www.eessi.io/docs/available_software/overview/), can we add shorthands + a legend above the table? For example: * `hsw` for `haswell` * `skl` for `skylake_avx512` * `spr` for `sapphirerapids` * `nv_n1` for `neoverse_n1` * `nv_v1` for `neoverse_v1`