Add Google Search Console verification tag

Author: souravkr529

index.html

@@ -14,6 +14,7 @@
   <meta name="author" content="ZenlyTool">
   <meta name="robots" content="index, follow">
   <link rel="canonical" href="https://slides.zenlytool.com/">
+  <meta name="google-site-verification" content="U3ldiMMOL7QlugK-Y_RC8DRkQFMKc7XSS0epoGIMxMg" />
 
   <!-- Open Graph / Facebook -->
   <meta property="og:type" content="website">