Update websocket model to use group prefix

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: owen-mc

go/ql/lib/ext/github.com.coder.websocket.model.yml

@@ -9,5 +9,5 @@ extensions:
       pack: codeql/go-all
       extensible: sourceModel
     data:
-      - ["coder/websocket", "Conn", True, "Read", "", "", "ReturnValue[1]", "remote", "manual"]
-      - ["coder/websocket", "Conn", True, "Reader", "", "", "ReturnValue[1]", "remote", "manual"]
+      - ["group:coder/websocket", "Conn", True, "Read", "", "", "ReturnValue[1]", "remote", "manual"]
+      - ["group:coder/websocket", "Conn", True, "Reader", "", "", "ReturnValue[1]", "remote", "manual"]