use noremap instead of map to avoid space mapping issue

A simple pull request, the request is to use noremap instead of map.
The issue stems from the fact that I mapped `<space>` to `:` so by using noremap the rhs of mapping does not get expanded, while right now, using map, I end up typing on vim's commandline area after using one of the mappings.
The rhs is actually mapped to `,m0         * :MarkologyDisable<CR>             <Space>` (taken from `:verb map ,m0`) so another solution to this issue would be to put the pipe right after `<cr>` but it would be less pretty in the source code (using `noremap` is ok since it's a mapping to a command).