fixup! Add microbenchmarks for PerasWeightSnapshot

Author: amesgen

ouroboros-consensus/bench/PerasCertDB-bench/Main.hs

@@ -29,9 +29,10 @@ import Test.Tasty.Bench
 data BenchmarkParams = BenchmarkParams
   { slotGap :: Word64
   -- ^ The slot gap between blocks on the fragments, ie the inverse of the
-  -- active slot coefficient.
+  -- active slot coefficient. Measured in slots.
   , fragmentLengthStepSize :: Natural
-  -- ^ Step size for the fragment lengths between different benchmarks.
+  -- ^ Step size for the fragment lengths between different benchmarks, in
+  -- blocks.
   , fragmentMaxLength :: Natural
   -- ^ The maximum length of a fragment, in blocks.
   , boostedBlockGap :: Natural