Yeah looks like they are touching - they will separate as they grow and start to look axolotl shaped.
Be aware though, they may not be ready to hatch at the same time. One twin will hatch and the other may exit the egg and appear to be underdeveloped and possibly dead. Don't discard the 2nd twin, it may well survive if you quarantine it and let it develop on it's own. A fair few of my twins/multiples turned out that way, some survived, some didn't.
But they look really cute doing the yin/yang thing inside the egg!