Fix comment.

openair2/LAYER2/nr_pdcp/nr_pdcp_entity.c

@@ -50,7 +50,7 @@ static void nr_pdcp_entity_recv_pdu(nr_pdcp_entity_t *entity,
     return;
   }
 
-  /* Check D/C bit inly DRBs */
+  /* check D/C bit only for DRBs */
   if ((entity->type == NR_PDCP_DRB_AM || entity->type == NR_PDCP_DRB_UM) && !(buffer[0] & 0x80)) {
     LOG_E(PDCP, "%s:%d:%s: fatal\n", __FILE__, __LINE__, __FUNCTION__);
     exit(1);