The character that appears under this tag is actually "Nefertari" rather than "Nefertiti," so the tag should be changed from "nefertiti_(fate/prototype_fragments" to "nefertari_(fate/prototype_fragments)"
It appears that whoever originally created the tag referenced the wrong Egyptian queen when doing so, because the character in question is one of Ozymandias' wives, a criteria that Nefertari meets and Nefertiti does not.
Here is the Type/Moon wiki link for the character that this tag should reference: http://typemoon.wikia.com/wiki/Nefertari