fix multi-peer generation, fix prefix handling (#491)

internal/app/api/core/assets/doc/v0_swagger.json

@@ -1969,7 +1969,7 @@
                         "type": "string"
                     }
                 },
-                "Suffix": {
+                "Prefix": {
                     "type": "string"
                 }
             }

internal/app/api/core/assets/doc/v0_swagger.yaml

@@ -206,7 +206,7 @@ definitions:
         items:
           type: string
         type: array
-      Suffix:
+      Prefix:
         type: string
     type: object
   model.Peer:

internal/app/api/core/server.go

@@ -139,7 +139,8 @@ func (s *Server) setupRoutes(endpoints ...ApiEndpointSetupFunc) {
 			s.versions[version].HandleFunc("GET /swagger/index.html", s.rapiDocHandler(version)) // Deprecated: old link
 			s.versions[version].HandleFunc("GET /doc.html", s.rapiDocHandler(version))
 
-			groupSetupFn(s.versions[version])
+			versionGroup := s.versions[version].Group()
+			groupSetupFn(versionGroup)
 		}
 	}
 }