Improved self checking description.

libraries/technology/tse/tb_tech_tse.vhd

@@ -21,8 +21,9 @@
 
 -- Purpose: Testbench for tech_tse the Tripple Speed Ethernet IP technology wrapper.
 -- Description:
---   The tb is self checking based on that tx_pkt_cnt=rx_pkt_cnt must be true
---   at the tb_end.
+--   The tb is self checking based on:
+--   . proc_tse_rx_packet() for expected header and data type
+--   . tx_pkt_cnt=rx_pkt_cnt > 0 must be true at the tb_end.
 -- Usage:
 --   > as 10
 --   > run -all