Fix snippets comments not displayed

The issue was that @notes were not passed to Banzai::NoteRenderer.render
in Projects::SnippetsController#show. This was forgotten in d470f3d1.

Signed-off-by: Rémy Coutable <remy@rymai.me>

app/controllers/projects/snippets_controller.rb

@@ -54,7 +54,7 @@ class Projects::SnippetsController < Projects::ApplicationController
   def show
     @note = @project.notes.new(noteable: @snippet)
-    @notes = @snippet.notes.fresh
+    @notes = Banzai::NoteRenderer.render(@snippet.notes.fresh, @project, current_user)
     @noteable = @snippet
   end