Drop `armeria-zipkin` artifact from setup.html (#2175)
Drop `armeria-zipkin` artifact from setup.html (#2175)

Motivation:
`armeira-zipkin` has been removed since
[0.94.0 release](https://github.com/line/armeria/releases/tag/armeria-0.94.0).

Modification:
*  Replace `armeria-zikin` with  `armeria-brave` in documentation

Result:
A user can set up `armeria-brave` using
[`Setting up a project`](https://line.github.io/armeria/setup.html#setting-up-a-project) guide.
line/armeria,kojilin/armeria,line/armeria,minwoox/armeria,trustin/armeria,kojilin/armeria,anuraaga/armeria,kojilin/armeria,anuraaga/armeria,line/armeria,kojilin/armeria,anuraaga/armeria,minwoox/armeria,anuraaga/armeria,minwoox/armeria,kojilin/armeria,anuraaga/armeria,anuraaga/armeria,trustin/armeria,line/armeria,minwoox/armeria,minwoox/armeria,trustin/armeria,kojilin/armeria,line/armeria,trustin/armeria,minwoox/armeria,line/armeria,trustin/armeria,trustin/armeria