make "Edit Config" option work for any path

lua/core/conf.lua

@@ -36,7 +36,7 @@ function M.configmenu()
           'a'
         }
         if entry.value == "Edit Config" then
-          lines = misc.readf(os.getenv('XDG_CONFIG_HOME')..'/nvim/init.lua')
+          lines = misc.readf(vim.fn.stdpath('config')..'/init.lua')
           local ft = vim.filetype.match({
             filename = os.getenv('XDG_CONFIG_HOME')..'/nvim/init.lua' })
           require("telescope.previewers.utils").highlighter(self.state.bufnr, ft)
@@ -58,7 +58,7 @@ function M.configmenu()
         actions.close(bufnr)
         local selection = action_state.get_selected_entry()
         if selection[1] == 'Edit Config' then
-          vim.cmd('e $XDG_CONFIG_HOME/nvim/init.lua')
+          vim.cmd('e '..vim.fn.stdpath('config')..'/init.lua')
         elseif selection[1] == 'Update Plugins' then
           require('dep').sync()
           if package.loaded['nvim-treesitter'] then