chore: tidy up index.html (#259)

Co-authored-by: johannhof <2622601+johannhof@users.noreply.github.com>

Author: github-actions[bot]

index.html

@@ -659,8 +659,7 @@ <h3>
         </aside>
       </li>
       <li>MUST have undergone security review by the <a href=
-      "https://www.w3.org/groups/ig/security/">Security Interest
-      Group</a>.
+      "https://www.w3.org/groups/ig/security/">Security Interest Group</a>.
       </li>
       <li>MUST have implementation commitment from at least one browser engine,
       one credential provider/wallet, and one issuer or verifier (depending on