fix: fix length typo

correct length、there、necessary spell

close https://gitee.com/openharmony/kernel_liteos_m/issues/I3QQA8

kernel/include/los_queue.h

@@ -355,7 +355,7 @@ typedef struct tagQueueInfo {
  * This API is used to create a message queue.
  * @attention
  * <ul>
- * <li>Threre are LOSCFG_BASE_IPC_QUEUE_LIMIT queues available, change it's value when necessory.</li>
+ * <li>There are LOSCFG_BASE_IPC_QUEUE_LIMIT queues available, change it's value when necessary.</li>
  * </ul>
  * @param queueName        [IN]    Message queue name. Reserved parameter, not used for now.
  * @param len              [IN]    Queue length. The value range is [1,0xffff].

kernel/include/los_swtmr.h

@@ -367,7 +367,7 @@ extern UINT32 LOS_SwtmrTimeGet(UINT32 swtmrID, UINT32 *tick);
  * @attention
  * <ul>
  * <li>Do not use the delay interface in the callback function that handles software timer timeout.</li>
- * <li>Threre are LOSCFG_BASE_CORE_SWTMR_LIMIT timers available, change it's value when necessory.</li>
+ * <li>There are LOSCFG_BASE_CORE_SWTMR_LIMIT timers available, change it's value when necessary.</li>
  * </ul>
  *
  * @param  interval     [IN] Timing duration of the software timer to be created (unit: ms).

kernel/src/los_queue.c

@@ -84,7 +84,7 @@ LITE_OS_SEC_TEXT_INIT UINT32 OsQueueInit(VOID)
  Function    : LOS_QueueCreate
  Description : Create a queue
  Input       : queueName  --- Queue name, less than 4 characters
-             : len        --- Queue lenth
+             : len        --- Queue length
              : flags      --- Queue type, FIFO or PRIO
              : maxMsgSize --- Maximum message size in byte
  Output      : queueID    --- Queue ID