Update Anki flashcards section

Author: donnemartin

README.md

@@ -46,12 +46,14 @@ Additional topics for interview prep:
   <br/>
 </p>
 
-The provided [Anki flashcard decks](https://apps.ankiweb.net/) use spaced repetition to help you retain key system design concepts.  Great while on-the-go.
+The provided [Anki flashcard decks](https://apps.ankiweb.net/) use spaced repetition to help you retain key system design concepts.
 
 * [System design deck](https://github.com/donnemartin/system-design-primer/blob/master/resources/flash_cards/System%20Design.apkg)
 * [System design exercises deck](https://github.com/donnemartin/system-design-primer/blob/master/resources/flash_cards/System%20Design%20Exercises.apkg)
 * [Object oriented design exercises deck](https://github.com/donnemartin/system-design-primer/blob/master/resources/flash_cards/OO%20Design.apkg)
 
+Great for use while on-the-go.
+
 ## Contributing
 
 > Learn from the community.