Fix OG image path.

Author: antoniandre

index.html

@@ -15,7 +15,7 @@
     <meta property="article:author" content="Antoni André">
     <meta property="og:title" content="Vueper Slides - Documentation">
     <meta property="og:description" content="Vueper Slides is a Vue JS Slideshow / Carousel">
-    <meta property="og:image" content="/images/vueperslides.jpg">
+    <meta property="og:image" content="https://antoniandre.github.io/vueper-slides/images/vueperslides.jpg">
     <meta property="og:image:type" content="image/jpeg" />
     <meta property="og:image:width" content="958 " />
     <meta property="og:image:height" content="589" />