qcacld-3.0: Fix misspelling "durring"

Fix misspelling: durring ==> during

Change-Id: I9379dd7a757feddcf1f76dea3b0fc678eb324b43
CRs-Fixed: 3275697

core/hdd/inc/wlan_hdd_power.h

@@ -539,7 +539,7 @@ void wlan_hdd_inc_suspend_stats(struct hdd_context *hdd_ctx,
 /*
  * Unit-test suspend/resume is a testing feature that allows putting firmware
  * into WoW suspend irrespective of Apps suspend status. It emulates the chain
- * of events that occur durring normal system-level suspend/resume, such as
+ * of events that occur during normal system-level suspend/resume, such as
  * initiating all of the suspend/resume stages in the correct order, and
  * enabling/disabling appropriate copy engine irqs.
  */