vim: set gui font better for non-mac systems

vimrc

@@ -56,8 +56,10 @@ call plug#begin('~/.vim/plugged')
     Plug 'delphinus/vim-firestore'
 call plug#end()
 
-if has("gui")
+if has('macunix')
 	set guifont=Inconsolata-dz:h12
+else
+	set guifont="Inconsolata-dz Medium 12"
 endif
 let mapleader       = ' '
 let maplocalleader  = ','