test/bench/go1: fix size for RegexpMatchMedium_32

Change-Id: Idc67abb95248bc010820a89dd6096a2da334e723
GitHub-Last-Rev: ae9014b
GitHub-Pull-Request: #47254
Reviewed-on: https://go-review.googlesource.com/c/go/+/335189
Reviewed-by: Rob Pike <[email protected]>
Run-TryBot: Rob Pike <[email protected]>
TryBot-Result: Go Bot <[email protected]>
Trust: Alberto Donizetti <[email protected]>

Author: nimelehin

test/bench/go1/regexp_test.go

@@ -53,7 +53,7 @@ func BenchmarkRegexpMatchEasy0_32(b *testing.B)  { benchmark(b, easy0, 32<<0) }
 func BenchmarkRegexpMatchEasy0_1K(b *testing.B)  { benchmark(b, easy0, 1<<10) }
 func BenchmarkRegexpMatchEasy1_32(b *testing.B)  { benchmark(b, easy1, 32<<0) }
 func BenchmarkRegexpMatchEasy1_1K(b *testing.B)  { benchmark(b, easy1, 1<<10) }
-func BenchmarkRegexpMatchMedium_32(b *testing.B) { benchmark(b, medium, 1<<0) }
+func BenchmarkRegexpMatchMedium_32(b *testing.B) { benchmark(b, medium, 32<<0) }
 func BenchmarkRegexpMatchMedium_1K(b *testing.B) { benchmark(b, medium, 1<<10) }
 func BenchmarkRegexpMatchHard_32(b *testing.B)   { benchmark(b, hard, 32<<0) }
 func BenchmarkRegexpMatchHard_1K(b *testing.B)   { benchmark(b, hard, 1<<10) }