nvim: rename fileformats.lua -> filetypes.lua

.config/nvim/init.lua

@@ -6,7 +6,7 @@ require('my/plugins')
 require('my/functions')
 require('my/settings')
 require('my/keymaps')
-require('my/fileformats')
+require('my/filetypes')
 require('my/completion')
 require('my/lsp')
 require('my/tools')

.config/nvim/lua/my/tools.lua

@@ -1,6 +1,6 @@
 require('my/plugins')
 require('my/keymaps')
-require('my/fileformats')
+require('my/filetypes')
 
 packer.use {
     'https://github.com/folke/which-key.nvim',