Changed the title to env variable and removed url and domain tags.

Author: Harshal-Taori-11

public/index.html

@@ -15,19 +15,16 @@
 
     <!-- Open graph meta tags -->
 
-    <meta property="og:title" content="Element Call" />
+    <meta property="og:title" content="<%- title %>" />
     <meta
       property="og:description"
       content="You're invited to join a call on Element Call"
     />
     <meta property="og:type" content="website" />
-    <meta property="og:url" content="https://call.element.io" />
     <meta property="og:image" content="favicon.png" />
 
     <meta name="twitter:card" content="summary_large_image" />
-    <meta property="twitter:domain" content="call.element.io" />
-    <meta property="twitter:url" content="https://call.element.io" />
-    <meta name="twitter:title" content="Element Call" />
+    <meta name="twitter:title" content="<%- title %>" />
     <meta
       name="twitter:description"
       content="You're invited to join a call on Element Call"