fix question update as teacher

app/graphql/mutations/update_question.rb

@@ -7,29 +7,28 @@ module Mutations
     argument :question, Inputs::QuestionUpdateInput, required: true
 
     def resolve(question:)
-      question = question.to_h
-      reviewer_user_id = question.delete(:reviewer_user_id)
+      question_attributes = question.to_h
+      reviewer_user_id = question_attributes.delete(:reviewer_user_id)
 
-      record = Question.find(question[:id])
+      question = Question.find(question_attributes[:id])
 
-      raise Pundit::NotAuthorizedError unless QuestionPolicy.new(context[:current_user], record).update?
+      raise Pundit::NotAuthorizedError unless QuestionPolicy.new(context[:current_user], question).update?
 
       ActiveRecord::Base.transaction do
-        record.update!(question)
+        question.update!(question_attributes)
 
-        if reviewer_user_id.present? && question[:status] != "draft"
-          review_request = record.review_requests.find_or_create_by!(
+        if reviewer_user_id.present? && question_attributes[:status] != "draft"
+          review_request = question.review_requests.find_or_create_by!(
             user_id: reviewer_user_id
           )
 
           review_request.update!(answered: false)
         end
 
-        { question: record, errors: [] }
+        { question: question, errors: [] }
       rescue ActiveRecord::RecordInvalid
         { question: nil, errors: question.errors.full_messages }
       end
-
     rescue Pundit::NotAuthorizedError => e
       { question: nil, errors: [e.message] }
     end