[vim/.gvimrc]: Remove superfluous `:` at beginning of maps
[vim/.vimrc]: comment kj: <Esc>l mapping
[zsh/.zshrc]: kj should move back after esc a la vim

When I hit kj, I want to stay in a position such that hitting <i>
returns me to the same location.
[zsh/.zshrc]: minor, move block to better location