Fix confusion between queSize and rear pointer in ArrayQueue implementation (#1851)

- `queSize` represents the queue's size, not the rear pointer position.
- In `pop`, `queSize--` decreases the size, not the rear pointer.
- The rear pointer is calculated using modulo (`%`) with the `front` and `queSize` to avoid confusion.

Co-authored-by: Chance Luo <247349913+chanceluo1618-bot@users.noreply.github.com>

Author: Kunchen-Luo

codes/c/chapter_stack_and_queue/array_queue.c

@@ -10,7 +10,7 @@
 typedef struct {
     int *nums;       // 用于存储队列元素的数组
     int front;       // 队首指针，指向队首元素
-    int queSize;     // 尾指针，指向队尾 + 1
+    int queSize;     // 当前队列的元素数量
     int queCapacity; // 队列容量
 } ArrayQueue;