설문응답들의 key를 index로 통일

frontend/src/forms/RCheckbox.tsx

@@ -14,8 +14,8 @@ export const RCheckbox = ({ question }: Props) => {
 
   return (
     <div className="m-5">
-      {question.content.choices.map((choice: any) => (
-        <div key={choice.text} className="">
+      {question.content.choices.map((choice: any, index: number) => (
+        <div key={index} className="">
           <span className="font-bold">{choice.text}</span>
           <span className="ml-3">
             - {result[choice.text] ? result[choice.text] : 0}

frontend/src/forms/RDate.tsx

@@ -8,8 +8,8 @@ type Props = {
 export const RDate = ({ question }: Props) => {
   return (
     <div className="m-5">
-      {question.answers.map((answer: any) => (
-        <div key={answer} className="font-bold">
+      {question.answers.map((answer: any, index: number) => (
+        <div key={index} className="font-bold">
           {answer}
         </div>
       ))}

frontend/src/forms/RRating.tsx

@@ -14,8 +14,8 @@ export const RRating = ({ question }: Props) => {
   return (
     <div className="m-5">
       <div>{question.content.minRateDescription}</div>
-      {question.content.choices.map((choice: any) => (
-        <div key={choice.text} className="">
+      {question.content.choices.map((choice: any, index: number) => (
+        <div key={index} className="">
           <span className="font-bold">{choice.text}</span>
           <span className="ml-3">
             - {result[choice.text] ? result[choice.text] : 0}