docs: fallback workaround of vue_language_server_path in nvim setup example (#5391)

Author: menuRivera

README.md

@@ -50,6 +50,8 @@ Note: The "Take Over" mode has been discontinued. Instead, a new "Hybrid" mode h
 -- local vue_language_server_path = mason_registry.get_package('vue-language-server'):get_install_path() .. '/node_modules/@vue/language-server'
 -- For Mason v2,
 -- local vue_language_server_path = vim.fn.expand '$MASON/packages' .. '/vue-language-server' .. '/node_modules/@vue/language-server'
+-- or even
+-- local vue_language_server_path = vim.fn.stdpath('data') .. "/mason/packages/vue-language-server/node_modules/@vue/language-server"
 
 local vue_language_server_path = '/path/to/@vue/language-server'