qcacmn: qdf: Fix misspellings

Fix misspellings in qdf/...

Change-Id: If61ee47fba94b2bb60f33ab74feda56dbe5cb7bd
CRs-Fixed: 3277902

qdf/inc/qdf_event.h

@@ -38,7 +38,7 @@ extern "C" {
 #endif /* __cplusplus */
 
 typedef __qdf_event_t qdf_event_t;
-/* Function declarations and documenation */
+/* Function declarations and documentation */
 
 QDF_STATUS qdf_event_create(qdf_event_t *event);