GitLab

Using the `jump` plugin, using the `marks` command will yield this output:
```
$ marks
desktop marks:printf:5: bad option: ->
dotfiles        marks:printf:5: bad option: ->
home    marks:printf:5: bad option: ->
```

the `marks` function uses `printf` with `->` and I believe `-` is used by `printf` for left-justification.  changing this to `-- "->"` seems to render the appropriate output.

```
desktop -> /Users/uname/Desktop
dotfiles        -> /Users/uname/.dotfiles
home    -> /Users/uname
```