refactor(nvim): update deprecated function call
refactor(nvim): update deprecated function call

Make it use the new name. This changed around the Neovim v0.6.1
timeframe, as far as I can tell.

wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent