Merge pull request encode#3382 from outime/patch-1

Fixed typo in ScopedRateThrottle example views

Author: xordoquy

docs/api-guide/throttling.md

@@ -148,7 +148,7 @@ For example, given the following views...
         throttle_scope = 'contacts'
         ...
 
-    class ContactDetailView(ApiView):
+    class ContactDetailView(APIView):
         throttle_scope = 'contacts'
         ...