Fixes to custom Jekyll headers

_includes/head-custom.html

@@ -1,18 +1,16 @@
 <!-- start custom head snippets, customize with your own _includes/head-custom.html file -->
-<meta name="keywords" content="astronomy, astrometry, C, C++, library, NOVAS"/>
+<meta name="keywords" content="structured data, JSON, C, C++, software library"/>
 <meta name="author" content="Attila Kovacs"/>
 <meta name="copyright" content="(C)2024 Attila Kovacs" />
 <meta name="robots" content="index,follow"/>
-<meta property="og:image" content="https://smithsonian.github.io/SuperNOVAS/images/SuperNOVAS-800x460.png" />
-<meta name="twitter:image" content="https://smithsonian.github.io/SuperNOVAS/images/SuperNOVAS-800x460.png" />
 
 <!-- Setup Google Analytics -->
 {% include head-custom-google-analytics.html %}
 
 <!-- You can set your favicon here -->
-<link rel="shortcut icon" type="image/x-icon" href="/SuperNOVAS/resources/favicon.ico">
-<link rel="icon" type="image/png" sizes="192x192" href="/SuperNOVAS/resources/android-chrome-192x192.png">
-<link rel="icon" type="image/png" sizes="512x512" href="/SuperNOVAS/resources/android-chrome-512x512.png">
-<link rel="apple-touch-icon" type="image/x-icon" href="/SuperNOVAS/resources/apple-touch-icon.png">
+<link rel="shortcut icon" type="image/x-icon" href="/xchange/resources/favicon.ico">
+<link rel="icon" type="image/png" sizes="192x192" href="/xchange/resources/android-chrome-192x192.png">
+<link rel="icon" type="image/png" sizes="512x512" href="/xchange/resources/android-chrome-512x512.png">
+<link rel="apple-touch-icon" type="image/x-icon" href="/xchange/resources/apple-touch-icon.png">
 
 <!-- end custom head snippets -->

_includes/site.webmanifest

@@ -1 +1 @@
-{"name":"","short_name":"","icons":[{"src":"/SuperNOVAS.home/android-chrome-192x192.png","sizes":"192x192","type":"image/png"},{"src":"/SuperNOVAS.home/android-chrome-512x512.png","sizes":"512x512","type":"image/png"}],"theme_color":"#ffffff","background_color":"#ffffff","display":"standalone"}
+{"name":"","short_name":"","icons":[{"src":"/xchange/android-chrome-192x192.png","sizes":"192x192","type":"image/png"},{"src":"/xcange/android-chrome-512x512.png","sizes":"512x512","type":"image/png"}],"theme_color":"#ffffff","background_color":"#ffffff","display":"standalone"}