Fix comment threads display

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/graphql/schema/event.ex

@@ -8,7 +8,7 @@ defmodule Mobilizon.GraphQL.Schema.EventType do
   import Absinthe.Resolution.Helpers, only: [dataloader: 1]
   import Mobilizon.GraphQL.Helpers.Error
 
-  alias Mobilizon.{Actors, Addresses, Events}
+  alias Mobilizon.{Actors, Addresses, Conversations, Events}
   alias Mobilizon.GraphQL.Resolvers.{Event, Picture, Tag}
   alias Mobilizon.GraphQL.Schema
 
@@ -79,7 +79,7 @@ defmodule Mobilizon.GraphQL.Schema.EventType do
     )
 
     field(:comments, list_of(:comment), description: "The comments in reply to the event") do
-      resolve(dataloader(Events))
+      resolve(dataloader(Conversations))
     end
 
     # field(:tracks, list_of(:track))