ui/doom-modeline: fix symlinked buffer-path hijinks
ui/doom-modeline: fix symlinked buffer-path hijinks

The modeline resolves a relative path to the current file in order to
display a short path string in the modeline. However, symlinks would
break this, resulting in paths like: ../../../../real/path/to/file.

hlissner/.emacs.d,keoko/.emacs.d,keoko/.emacs.d,aminb/.emacs.d,hlissner/.emacs.d,hlissner/doom-emacs,hlissner/.emacs.d,aminb/.emacs.d,UndeadKernel/emacs_doom,aminb/.emacs.d,keoko/.emacs.d,keoko/.emacs.d,keoko/.emacs.d,hlissner/doom-emacs,hlissner/.emacs.d,hlissner/.emacs.d,keoko/.emacs.d,aminb/.emacs.d,aminb/.emacs.d,UndeadKernel/emacs_doom,aminb/.emacs.d,UndeadKernel/emacs_doom,hlissner/doom-emacs,hlissner/.emacs.d,hlissner/doom-emacs,hlissner/doom-emacs,hlissner/doom-emacs,keoko/.emacs.d,aminb/.emacs.d,UndeadKernel/emacs_doom,hlissner/.emacs.d,hlissner/doom-emacs,UndeadKernel/emacs_doom,hlissner/.emacs.d,UndeadKernel/emacs_doom,keoko/.emacs.d,UndeadKernel/emacs_doom,aminb/.emacs.d