maintainers: add github attribute to amozeo

tooling around nixpkgs doesn't use githubId attribute

maintainers/maintainer-list.nix

@@ -1309,6 +1309,7 @@
   };
   amozeo = {
     email = "wroclaw223@outlook.com";
+    github = "amozeo";
     githubId = 37040543;
     name = "Wroclaw";
   };