): is appended to the search keyword searching on NAVER, a Korean search website, with Kagi bang.
For example, when searching !naver helloworld on Kagi, NAVER searches about "helloworld):" instead of "helloworld".
When I have checked the NAVER bang using Kagi Bang Explorer, its URL template is https://search.naver.com/search.naver?query={{{s}}}): instead of https://search.naver.com/search.naver?query={{{s}}}.

The URL template of the NAVER bang should https://search.naver.com/search.naver?query={{{s}}}, so Kagi should make NAVER to search about "helloworld" instead of "helloworld):".