fix(client): return an empty string for empty sections

client/src/templates/Challenges/components/Challenge-Description.js

@@ -9,17 +9,11 @@ const propTypes = {
   section: PropTypes.string
 };
 
-function emptyInstruction(instructions) {
-  return /^<section\s+id\s*=\s*("|')instructions\1\s*>\s*<\/section>$/.test(
-    instructions
-  );
-}
-
 function ChallengeDescription({ description, instructions, section }) {
   return (
     <div className={`challenge-instructions ${section}`}>
       <div dangerouslySetInnerHTML={{ __html: description }} />
-      {!emptyInstruction(instructions) && (
+      {instructions && (
         <Fragment>
           <hr />
           <div dangerouslySetInnerHTML={{ __html: instructions }} />