fix quotation, indentation

Challenge is not currently appearing on https://swcarpentry.github.io/python-novice-inflammation/05-cond/

Author: stragu

_episodes/05-cond.md

@@ -434,16 +434,15 @@ freeing us from having to manually examine every plot for features we've seen be
 > ## Counting Vowels
 >
 > 1.  Write a loop that counts the number of vowels in a character string.
->
 > 2. Test it on a few individual words and full sentences.
->
 > 3. Once you are done, compare your solution to your neighbor's.
 >    Did you make the same decisions about how to handle the letter 'y'
 >    (which some people think is a vowel, and some do not)?
+>
 > > ## Solution
 > > ~~~
 > > vowels = 'aeiouAEIOU'
-> > sentence = 'Mary had a little lamb."
+> > sentence = 'Mary had a little lamb.'
 > > count = 0
 > > for char in sentence:
 > >     if char in vowels: