[fix] make links that should be relative... be relative

_includes/meta-generic.html

@@ -5,7 +5,7 @@
 <meta name="color-scheme" content="dark light"/>
 <meta name="viewport" content="width=device-width, initial-scale=1"/>
 <meta property="og:type" content="website"/>
-<meta property="og:image" content="https://secureblue.io/assets/secureblue.png"/>
+<meta property="og:image" content="/assets/secureblue.png"/>
 <meta property="og:image:width" content="512"/>
 <meta property="og:image:height" content="512"/>
 <meta property="og:image:alt" content="secureblue logo"/>