fix(vim-aliases): make alias dependant on envvar

aliases/available/vim.aliases.bash

@@ -5,11 +5,10 @@ VIM=$(command -v vim)
 GVIM=$(command -v gvim)
 MVIM=$(command -v mvim)
 
+[[ -n $VIM ]] && alias v='$VIM'
 # open the vim help in fullscreen incorporated from
 # https://stackoverflow.com/a/4687513
-alias vimh='${VIM} -c ":h | only"'
-
-[[ -n $VIM ]] && alias v='$VIM'
+[[ -n $VIM ]] && alias vimh='${VIM} -c ":h | only"'
 
 # open vim in new tab is taken from
 # http://stackoverflow.com/questions/936501/let-gvim-always-run-a-single-instancek