fix queues example block end

Author: Yuhi-Sato

context/best-practices.md

@@ -145,7 +145,7 @@ Async do |task|
 		while chunk = socket.gets
 			queue.push(chunk)
 		end
-	end
+
 		# After this point, we won't be able to add items to the queue, and popping items will eventually result in nil once all items are dequeued:
 		queue.close
 	end

guides/best-practices/readme.md

@@ -168,7 +168,7 @@ Async do |task|
 		while chunk = socket.gets
 			queue.push(chunk)
 		end
-	end
+		
 		# After this point, we won't be able to add items to the queue, and popping items will eventually result in nil once all items are dequeued:
 		queue.close
 	end