Merge pull request #251092 from McSinyx/cnx

maintainers: update McSinyx's contacts

maintainers/maintainer-list.nix

···
     name = "Matthias C. M. Troffaes";
   };
   McSinyx = {
-    email = "[e-mail]";
+    email = "[e-mail]";
     github = "McSinyx";
     githubId = 13689192;
+    matrix = "@cnx:loang.net";
     name = "Nguyễn Gia Phong";
-    keys = [{
-      fingerprint = "E90E 11B8 0493 343B 6132  E394 2714 8B2C 06A2 224B";
-    }];
+    keys = [
+      { fingerprint = "E90E 11B8 0493 343B 6132  E394 2714 8B2C 06A2 224B"; }
+      { fingerprint = "838A FE0D 55DC 074E 360F  943A 84B6 9CE6 F3F6 B767"; }
+    ];
   };
   mcwitt = {
     email = "[e-mail]";