Update plugins/webapi/message/plugin.go

Co-Authored-By: Luca Moser <moser.luca@gmail.com>

plugins/webapi/message/plugin.go

@@ -70,6 +70,7 @@ type Response struct {
 	Error    string    `json:"error,omitempty"`
 }
 
+// Request holds the message ids to query.
 type Request struct {
 	Ids []string `json:"ids"`
 }