Correct typo in comment.

libraries/base/diag/src/vhdl/diag_block_gen.vhd

@@ -34,7 +34,7 @@
 --     mem_high_adrs      : slv -- end address at MM interface
 --     bsn_init           : slv -- BSN of first output block
 --
---   The samples_per_packet >= 2, because the in the p-comb state machine the
+--   The samples_per_packet >= 2, because the in the p_comb state machine the
 --   eop cannot occur at the sop.
 --
 --   The MM reading starts at mem_low_adrs when the BG is first enabled. If