chore(build): auto-generate vimdoc

Author: github-actions[bot]

doc/lazy.nvim.txt

@@ -480,7 +480,7 @@ CONFIGURATION                                        *lazy.nvim-configuration*
       -- when the readme opens with :help it will be correctly displayed as markdown
       readme = {
         root = vim.fn.stdpath("state") .. "/lazy/readme",
-        files = { "README.md" },
+        files = { "README.md", "lua//README.md" },
         -- only generate markdown helptags for plugins that dont have docs
         skip_if_doc_exists = true,
       },