chore(docs): set og:image to load from a https URL

Author: 0iq

src/index.html

@@ -30,7 +30,7 @@
       property="og:description"
       content="Nest is a framework for building efficient, scalable Node.js server-side applications. It uses progressive JavaScript, is built with TypeScript and combines elements of OOP (Object Oriented Programming), FP (Functional Programming), and FRP (Functional Reactive Programming)."
     />
-    <meta property="og:image" content="http://nestjs.com/img/nest-og.png" />
+    <meta property="og:image" content="https://nestjs.com/img/nest-og.png" />
     <meta property="og:image:width" content="1200" />
     <meta property="og:image:height" content="650" />
     <meta