Comment: fix code comment for xTaskAbortDelay (#272)

diff --git a/tasks.c b/tasks.c
index a994ec9..fd3c257 100644
--- a/tasks.c
+++ b/tasks.c
@@ -2694,8 +2694,8 @@
                 #if ( configUSE_PREEMPTION == 1 )

                     {

                         /* Preemption is on, but a context switch should only be

-                         *  performed if the unblocked task has a priority that is

-                         *  equal to or higher than the currently executing task. */

+                         * performed if the unblocked task has a priority that is

+                         * higher than the currently executing task. */

                         if( pxTCB->uxPriority > pxCurrentTCB->uxPriority )

                         {

                             /* Pend the yield to be performed when the scheduler