contents(queue): fix typo in queue content (#609)

Co-authored-by: Yangshun Tay <tay.yang.shun@gmail.com>

apps/website/contents/algorithms/queue.md

@@ -55,7 +55,7 @@ Breadth-first search is commonly implemented using queues.
 
 ## Things to look out for during interviews
 
-Most languages don't have a built-in Queue class which can be used, and candidates often use arrays (JavaScript) or lists (Python) as a queue. However, note that the enqueue operation in such a scenario will be O(n) because it requires shifting of all other elements by one. In such cases, you can flag this to the interviewer and say that you assume that there's a queue data structure to use which has an efficient enqueue operation.
+Most languages don't have a built-in Queue class which can be used, and candidates often use arrays (JavaScript) or lists (Python) as a queue. However, note that the dequeue operation (assuming the front of the queue is on the left) in such a scenario will be O(n) because it requires shifting of all other elements left by one. In such cases, you can flag this to the interviewer and say that you assume that there's a queue data structure to use which has an efficient dequeue operation.
 
 ## Corner cases