old_contents: var list = [
    {
      "dir_name": "buttons",
      "files": [
        "index.html"
      ]
    },
    {
      "dir_name": "chat-flexbox",
      "files": [
        "index.html",
      ]
    },
    {
      "dir_name": "hamburger-menu",
      "files": [
        "index.html",
        "maru.html",
        "under-menu-string.html"
      ]
    },
    {
      "dir_name": "image-cover",
      "files": [
        "index.html"
      ]
    },
    {
      "dir_name": "infinite-huwahuwa",
      "files": [
        "index.html"
      ]
    },
    {
      "dir_name": "solid-char",
      "files": [
        "index.html"
      ]
    }
    {
      "dir_name": "water-css",
      "files": [
        "index.html"
      ]
    }
  ]
  
new_contents: var list = [
    {
      "dir_name": "buttons",
      "files": [
        "index.html"
      ]
    },
    {
      "dir_name": "chat-flexbox",
      "files": [
        "index.html",
      ]
    },
    {
      "dir_name": "hamburger-menu",
      "files": [
        "index.html",
        "maru.html",
        "under-menu-string.html"
      ]
    },
    {
      "dir_name": "image-cover",
      "files": [
        "index.html"
      ]
    },
    {
      "dir_name": "infinite-huwahuwa",
      "files": [
        "index.html"
      ]
    },
    {
      "dir_name": "solid-char",
      "files": [
        "index.html"
      ]
    },
    {
      "dir_name": "water-css",
      "files": [
        "index.html"
      ]
    }
  ]
  
subject: Add ,