Fix docs code style (#7937)

docs/vim.md

@@ -13,7 +13,7 @@ See the [vim-prettier](https://github.com/prettier/vim-prettier) readme for inst
 
 The best way to install Neoformat is with your favorite plugin manager for Vim, such as [vim-plug](https://github.com/junegunn/vim-plug):
 
-```
+```vim
 Plug 'sbdchd/neoformat'
 ```
 
@@ -21,7 +21,7 @@ Run `:Neoformat` or `:Neoformat prettier` in a supported file to run Prettier.
 
 To have Neoformat run Prettier on save:
 
-```
+```vim
 autocmd BufWritePre *.js Neoformat
 ```
 
@@ -32,7 +32,7 @@ You can also make Vim format your code more frequently, by setting an `autocmd`
 
 For example, you can format on both of the above events together with `BufWritePre` like this:
 
-```
+```vim
 autocmd BufWritePre,TextChanged,InsertLeave *.js Neoformat
 ```
 
@@ -40,7 +40,7 @@ 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`:
 
-```
+```vim
 autocmd FileType javascript setlocal formatprg=prettier\ --single-quote\ --trailing-comma\ es5
 " Use formatprg when available
 let g:neoformat_try_formatprg = 1
@@ -54,7 +54,7 @@ ALE requires either Vim 8 or Neovim as ALE makes use of the asynchronous abiliti
 
 The best way to install ALE is with your favorite plugin manager for Vim, such as [vim-plug](https://github.com/junegunn/vim-plug):
 
-```
+```vim
 Plug 'dense-analysis/ale'
 ```
 
@@ -64,7 +64,7 @@ ALE will try to use Prettier installed locally before looking for a global insta
 
 Enable the Prettier fixer for the languages you use:
 
-```
+```vim
 let g:ale_fixers = {
 \   'javascript': ['prettier'],
 \   'css': ['prettier'],
@@ -73,7 +73,7 @@ let g:ale_fixers = {
 
 ALE supports both _linters_ and _fixers_. If you don't specify which _linters_ to run, **all available tools for all supported languages will be run**, and you might get a correctly formatted file with a bunch of lint errors. To disable this behavior you can tell ALE to run only linters you've explicitly configured (more info in the [FAQ](https://github.com/dense-analysis/ale/blob/ed8104b6ab10f63c78e49b60d2468ae2656250e9/README.md#faq-disable-linters)):
 
-```
+```vim
 let g:ale_linters_explicit = 1
 ```
 
@@ -81,13 +81,13 @@ You can then run `:ALEFix` in a JavaScript or CSS file to run Prettier.
 
 To have ALE run Prettier on save:
 
-```
+```vim
 let g:ale_fix_on_save = 1
 ```
 
 It's recommended to use a [config file](configuration.md), but you can also add options in your `.vimrc`:
 
-```
+```vim
 let g:ale_javascript_prettier_options = '--single-quote --trailing-comma es5'
 ```
 
@@ -96,26 +96,28 @@ let g:ale_javascript_prettier_options = '--single-quote --trailing-comma es5'
 Prettier extension for [coc.nvim](https://github.com/neoclide/coc.nvim) which requires neovim or vim8.1.
 Install coc.nvim with your favorite plugin manager, such as [vim-plug](https://github.com/junegunn/vim-plug):
 
-```
+```vim
 Plug 'neoclide/coc.nvim', {'do': { -> coc#util#install()}}
 ```
 
 And install coc-prettier by command:
 
-```
+```vim
 CocInstall coc-prettier
 ```
 
 Setup `Prettier` command in your `init.vim` or `.vimrc`
 
-```
+```vim
 command! -nargs=0 Prettier :call CocAction('runCommand', 'prettier.formatFile')
 ```
 
 Update your `coc-settings.json` for languages that you want format on save.
 
-```
-  "coc.preferences.formatOnSaveFiletypes": ["css", "Markdown"],
+```json
+{
+  "coc.preferences.formatOnSaveFiletypes": ["css", "Markdown"]
+}
 ```
 
 [coc-prettier](https://github.com/neoclide/coc-prettier) have same configurations of [prettier-vscode](https://github.com/prettier/prettier-vscode), open `coc-settings.json` by `:CocConfig` to get autocompletion support.
@@ -124,7 +126,7 @@ 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:
 
-```
+```vim
 nnoremap gp :silent %!prettier --stdin-filepath % --trailing-comma all --single-quote<CR>
 ```