cmd/tailscale: fix 'debug local-creds' hostname

Fixes #6446

Change-Id: I82f0a3dcf6aca25b7f67265533ee30a9d939d86f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>

cmd/tailscale/cli/debug.go

@@ -258,7 +258,7 @@ func runLocalCreds(ctx context.Context, args []string) error {
 		printf("curl http://localhost:%v/localapi/v0/status\n", safesocket.WindowsLocalPort)
 		return nil
 	}
-	printf("curl --unix-socket %s http://foo/localapi/v0/status\n", paths.DefaultTailscaledSocket())
+	printf("curl --unix-socket %s http://local-tailscaled.sock/localapi/v0/status\n", paths.DefaultTailscaledSocket())
 	return nil
 }