Added closing quotation mark

Author: rsmoz

www/FAQ.rst

@@ -38,7 +38,7 @@ Won't the design and evolution of Swift be warped by being too C++-centric?
 
 This is a common question from Objective-C programmers, primarily those who
 really dislike C++.  There are a lot of reasons you can have hope that Swift
-will end up being a great "successor to Objective-C instead of a "C++
+will end up being a great "successor to Objective-C" instead of a "C++
 replacement":
 
  * The compiler team has expert-level knowledge of Objective-C (the language),