[FAQ][Common] 테두리 radius 처리

app/src/main/res/drawable/faq_answer_border.xml

@@ -3,6 +3,7 @@
   <item>
     <shape android:shape="rectangle">
       <stroke android:color="#e5e5e5" android:width="1dp" />
+      <corners android:radius="2dp"/>
     </shape>
   </item>
 </selector>