[css-text-3] Acknowledge Emilio's contributions

Author: frivoal

css-text-3/Overview.bs

@@ -4671,7 +4671,7 @@ Privacy and Security Considerations</h2>
 Acknowledgements</h2>
 
   <p>This specification would not have been possible without the help from:
-  Ayman Aldahleh, Bert Bos, Tantek Çelik, James Clark, Stephen Deach, John Daggett,
+  Ayman Aldahleh, Bert Bos, Tantek Çelik, James Clark, Emilio Cobos Álvarez, Stephen Deach, John Daggett,
   Martin Dürst,
   Laurie Anna Edlund, Ben Errez, Yaniv Feinberg, Arye Gittelman, Ian
   Hickson, Martin Heijdra, Richard Ishida, Masayasu Ishikawa,