Fix all SEO checklist

[safaldas]

<title>60 Character</title

<meta name="description" content=" 157 Characters." />

<link rel="canonical" href="Blog URL/" />

<meta property="og:site_name" content="nullcast" />
<meta property="og:type" content="article" />
<meta property="og:title" content="Title" />
<meta property="og:description" content="Meta Description" />

<meta property="og:url" content="Blog Url" />
<meta property="og:image" content="Image Url" />
<meta property="article:published_time" content="2020-10-13T13:23:17.000Z" />
<meta property="article:modified_time" content="2020-10-13T13:23:17.000Z" />
<meta property="article:tag" content="Blog" />
<meta property="article:publisher" content="https://www.facebook.com/nullcast" />
<meta name="twitter:card" content="summary_large_image" /> Use the Same  for all blog
<meta name="twitter:title" content="Title" />
<meta name="twitter:description" content="Meta Description" />

<meta name="twitter:url" content=" Blog  URL" />

<meta name="twitter:image" content="Image Url" />
<meta name="twitter:label1" content="Written by" />
<meta name="twitter:data1" content="Author Name" />
<meta name="twitter:data2" content="Blog" />
<meta name="twitter:site" content="@nullcast_io" />
<meta property="og:image:width" content="1200" />
<meta property="og:image:height" content="630" />
</header>

[safaldas]

Add seo for userpage also

[jeenaa]

[thealpha93]