Update documentation of uxTaskGetTaskNumber function (#460)

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
diff --git a/include/task.h b/include/task.h
index 8921f10..a4e959b 100644
--- a/include/task.h
+++ b/include/task.h
@@ -3060,7 +3060,7 @@
                                           UBaseType_t uxHighestPriorityWaitingTask ) PRIVILEGED_FUNCTION;
 
 /*
- * Get the uxTCBNumber assigned to the task referenced by the xTask parameter.
+ * Get the uxTaskNumber assigned to the task referenced by the xTask parameter.
  */
 UBaseType_t uxTaskGetTaskNumber( TaskHandle_t xTask ) PRIVILEGED_FUNCTION;