remove --stdin (#7668)

docs/vim.md

@@ -41,7 +41,7 @@ See `:help autocmd-events` in Vim for details.
 It's recommended to use a [config file](configuration.md), but you can also add options in your `.vimrc`:
 
 ```
-autocmd FileType javascript setlocal formatprg=prettier\ --stdin\ --single-quote\ --trailing-comma\ es5
+autocmd FileType javascript setlocal formatprg=prettier\ --single-quote\ --trailing-comma\ es5
 " Use formatprg when available
 let g:neoformat_try_formatprg = 1
 ```
@@ -125,7 +125,7 @@ Update your `coc-settings.json` for languages that you want format on save.
 If you want something really bare-bones, you can create a custom key binding. In this example, `gp` (mnemonic: "get pretty") is used to run prettier (with options) in the currently active buffer:
 
 ```
-nnoremap gp :silent %!prettier --stdin --stdin-filepath % --trailing-comma all --single-quote<CR>
+nnoremap gp :silent %!prettier --stdin-filepath % --trailing-comma all --single-quote<CR>
 ```
 
 Note that if there's a syntax error in your code, the whole buffer will be replaced with an error message. You'll need to press `u` to get your code back.