Update index.html

Co-authored-by: Dave Longley <dlongley@digitalbazaar.com>

index.html

@@ -237,8 +237,10 @@ <h3>
             <dd>
               <p>
 This family of specifications consists of documents that each define how to
-express and associate proofs of integrity with data, focusing on verifiable credentials and
-concrete serializations for each of the defined syntaxes. The specific set of
+express and associate proofs of integrity for verifiable credentials and
+concrete serializations for each of the defined syntaxes. The Working Group
+would welcome the usage of these techniques for data in general, but
+its scope will be to solve verifiable credentials use cases. The specific set of
 concrete serializations included will be determined by the Working Group. The
 following are a non-exhaustive selection of expected input documents:
               </p>