fix path to the node executable

README.md

@@ -63,7 +63,7 @@ let g:python3_host_prog = expand("<path to python with pynvim installed>")
 let g:python3_host_prog = expand("~/.miniconda/envs/neovim/bin/python3.8") " <- example
 
 let g:node_host_prog = expand("<path to node with neovim installed>")
-let g:node_host_prog = expand("~/.nvm/versions/node/v12.16.1/bin/node") " <- example 
+let g:node_host_prog = expand("~/.nvm/versions/node/v12.16.1/bin/neovim-node-host") " <- example 
 ```
 
 ## List of programs you should install