Remove subtitle for Data Model

Co-authored-by: Manu Sporny <[email protected]>

Author: TallTed

index.html

@@ -26,7 +26,7 @@
         shortName: "vc-data-model",
 
         // subtitle for the spec
-        subtitle: "Expressing verifiable information on the Web",
+        //subtitle: "Expressing information with verifiable provenance",
 
         // if you wish the publication date to be other than today, set this
         publishDate: "2021-11-09",