i guess nvim has different plugin arrangement,
the old .vimrc has the followings, 
though im not very familar with it but fzf get my hand's muscle memory of ,h


    " vim-plug, see https://github.com/junegunn/vim-plug
    call plug#begin()


    Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
    Plug 'junegunn/fzf.vim'
    Plug 'rust-lang/rust.vim'
    " many of them ..."

    call plug#end()


I lost ,h for :History
it's from fzf.vim plugin

    Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
    Plug 'junegunn/fzf.vim'

For goodness, the :CocInfo is still there. :)