nvim: organize sort-motion dependency

.config/nvim/lua/blake/plugins.lua

@@ -346,13 +346,16 @@ return require('packer').startup({function()
    -- Conveniences
    use { -- sort motion:               (gs)
       'christoomey/vim-sort-motion',
+      requires = 'navicore/vissort.vim', -- config requires
       config = function()
          vim.cmd [[
             "let g:sort_motion_flags = 'i'
             let g:sort_motion_visual_block_command = 'Vissort'
          ]]
       end,
-      requires = 'navicore/vissort.vim', -- config requires
+   }
+   use { -- vissort:                   "Visual Sort" - sort based on selected characters
+      'navicore/vissort.vim',
    }
    use { -- ghost:                     Web browser integration
       'raghur/vim-ghost',