refactor(loader): format annotations

runtime/lua/vim/loader.lua

@@ -47,10 +47,10 @@ local M = {}
 
 --- @alias vim.loader.Stats table<string, {total:number, time:number, [string]:number?}?>
 
----@nodoc
+--- @private
 M.path = vim.fn.stdpath('cache') .. '/luac'
 
----@nodoc
+--- @private
 M.enabled = false
 
 --- @type vim.loader.Stats
@@ -144,7 +144,7 @@ local function readfile(path, mode)
   local f = uv.fs_open(path, 'r', mode)
   if f then
     local size = assert(uv.fs_fstat(f)).size
-    local data = uv.fs_read(f, size, 0) --[[@as string?]]
+    local data = uv.fs_read(f, size, 0)
     uv.fs_close(f)
     return data
   end