This is perfectly normal and appears how it should. My Hermann’s tortoise has it too. Some Hermann’s have a more pronounced tail tip than others. Here is some information about it from https://www.hermannihaven.com/t-hermanni-systematics
At the tip of the tail on both sexes, a horny nail is found. This feature has enabled a second but much less used name for Testudo hermanni, the Mediterranean spur-tailed tortoise. It is believed that this hardened tip is used by males to stimulate the female’s cloacal region and to then guide his penis into the her cloaca during courtship but its purpose on females is unknown. The only difference between the sexes concerning the horny tail tip is that with males, it is often longer than the claws while in females it is shorter.