Wiktionary provides offensive words as suggestions. It has been observed that the N-word is sometimes a suggestion when the letter "n" alone is typed. Similarly, "f" and "c" and probably many other entries return offensive suggestions. This is, of course, offensive. While dictionaries must continue to include offensive words, largely to document their inherent offensiveness, there is no reason to suggest them. People who want to look them up can type the full words.
The N-word's page includes "offensive" 25 times, "vulgar" 11 times, and "slur" 3 times. It is absolutely clear that it is offensive and racist. There is no excuse to suggest it.
I know that some people might argue that these words are real words, so they should be suggested. No, that is an argument for why offensive words must remain in the dictionary, not for why they should be suggested. I can also imagine that people will argue that there are multiple pages for phrases that begin with the N-word and that, without suggestions, they will not be found. This is a specious argument. Wiktionary does not have a mission of promotion — its purpose is documentation. If someone wants the definition of a racist phrase that is in Wiktionary, they can find it. Any important offensive phrases could also be linked from other pages. Not only is there no need to promote such phrases to people who are not looking for them, it is offensive to do so. It implies a normalization of offensive words that is not true.
I imagine other people might argue that it's just the way the suggestion algorithm works. That argument is never valid. Algorithms can and should be changed.