fix bug

app/controllers/question_banks_controller.rb

@@ -200,7 +200,7 @@ class QuestionBanksController < ApplicationController
             end
           end
         end
-        # question_type：5实训题；其他是非实训题
+        # question_type：5实训题；其他是非实训题git
         # if q.question_type != 5
         #   # 复制选择题题目选项
         #   q.exercise_bank_choices.try(:each_with_index) do |choice, index|