Update Digital Credentials API reference to FPWD (#648)

Merging as agreed on today's WG call.

* DC API FPWD reference

* Update openid-4-verifiable-presentations-1_0.md

Co-authored-by: Christian Bormann <[email protected]>

---------

Co-authored-by: Christian Bormann <[email protected]>

Author: timcappalli

openid-4-verifiable-presentations-1_0.md

@@ -2276,7 +2276,7 @@ Ecosystems intending to use trusted authority mechanisms SHOULD ensure that the
         </front>
 </reference>
 
-<reference anchor="W3C.Digital_Credentials_API" target="https://w3c-fedid.github.io/digital-credentials/">
+<reference anchor="W3C.Digital_Credentials_API" target="https://www.w3.org/TR/2025/WD-digital-credentials-20250701/">
         <front>
           <title>Digital Credentials API</title>
 		  <author fullname="Marcos Caceres">
@@ -2285,9 +2285,10 @@ Ecosystems intending to use trusted authority mechanisms SHOULD ensure that the
           <author fullname="Tim Cappalli">
             <organization>Okta</organization>
           </author>
-          <author fullname="Sam Goto">
+          <author fullname="Mohamed Amir Yosef">
             <organization>Google</organization>
           </author>
+          <date day="1" month="July" year="2025"/>
         </front>
 </reference>