Add more formatting & emphasize palindrome details

- Put `true` and `false` in code tags
- Put `palindrome` in definition tags
- Add "Note" to further emphasize you'll need to remove all non-alphanumeric
  characters
- Put various forms of "race car" in code tags

seed/challenges/01-front-end-development-certification/basic-bonfires.json

@@ -154,10 +154,10 @@
       "id": "aaa48de84e1ecc7c742e1124",
       "title": "Check for Palindromes",
       "description": [
-        "Return true if the given string is a palindrome. Otherwise, return false.",
+        "Return <code>true</code> if the given string is a palindrome. Otherwise, return <code>false</code>.",
-        "A palindrome is a word or sentence that's spelled the same way both forward and backward, ignoring punctuation, case, and spacing.",
+        "A <dfn>palindrome</dfn> is a word or sentence that's spelled the same way both forward and backward, ignoring punctuation, case, and spacing.",
-        "You'll need to remove all non-alphanumeric characters (punctuation, spaces and symbols) and turn everything lower case in order to check for palindromes.",
+        "<strong>Note</strong><br>You'll need to remove <strong>all non-alphanumeric characters</strong> (punctuation, spaces and symbols) and turn everything lower case in order to check for palindromes.",
-        "We'll pass strings with varying formats, such as \"racecar\", \"RaceCar\", and \"race CAR\" among others.",
+        "We'll pass strings with varying formats, such as <code>\"racecar\"</code>, <code>\"RaceCar\"</code>, and <code>\"race CAR\"</code> among others.",
         "Remember to use <a href=\"//github.com/FreeCodeCamp/freecodecamp/wiki/How-to-get-help-when-you-get-stuck\" target=\"_blank\">Read-Search-Ask</a> if you get stuck. Write your own code."
       ],
       "challengeSeed": [