docs: Fix metadata

Author: tony

docs/_templates/layout.html

@@ -33,10 +33,10 @@
   <link rel="icon" type="image/png" sizes="16x16" href="/_static/img/icons/icon-16x16.png">
 
   <!-- Apple -->
-  <meta name="apple-mobile-web-app-title" content="libvcs">
+  <meta name="apple-mobile-web-app-title" content="{{ theme_project_name }}">
 
   <link rel="apple-touch-icon" sizes="192x192" href="/_static/img/icons/icon-192x192.png">
-  <link rel="mask-icon" href="/_static/img/libvcs.svg" color="grey">
+  <link rel="mask-icon" href="/_static/img/tmuxp.svg" color="grey">
 
   <!-- Microsoft -->
   <meta name="msapplication-TileColor" content="#ffffff">