create lazy/nvim plugin specification using regular spec format

Author: gongfarmer

lua/lazy/core/plugin.lua

@@ -375,9 +375,7 @@ function M.load()
   -- load specs
   Util.track("spec")
   Config.spec = Spec.new()
-  Config.spec:parse(
-    { vim.deepcopy(Config.options.spec), { url = Config.options.git.url_format:format("folke/lazy.nvim") } }
-  )
+  Config.spec:parse({ vim.deepcopy(Config.options.spec), { "folke/lazy.nvim" } })
 
   -- override some lazy props
   local lazy = Config.spec.plugins["lazy.nvim"]