[dev.fuzz] testing: fix documentation for fuzzminimizetime
[dev.fuzz] testing: fix documentation for fuzzminimizetime

This removes redundancy for the default value.

Fixes #46555

Change-Id: Ib62bd2d584ef82bef806d0fe2ce59957488e469e
Reviewed-on: https://go-review.googlesource.com/c/go/+/325070
Trust: Katie Hockman <e321a8fd89c4908465ddaf8d5d0d62480efacb63@golang.org>
Run-TryBot: Katie Hockman <e321a8fd89c4908465ddaf8d5d0d62480efacb63@golang.org>
TryBot-Result: Go Bot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Reviewed-by: Roland Shoemaker <0d270388f2f92757a5de0f4bd891d3b392c44c4f@golang.org>

golang/go,cloudflare/go,golang/go,cloudflare/go,nawawi/go,CAFxX/go,CAFxX/go,golang/go,cloudflare/go,CAFxX/go,cloudflare/go,cloudflare/go,cloudflare/go,cloudflare/go,nawawi/go,CAFxX/go,golang/go,nawawi/go,nawawi/go,CAFxX/go,golang/go,CAFxX/go,CAFxX/go,nawawi/go,CAFxX/go,nawawi/go,golang/go,nawawi/go,golang/go,cloudflare/go,nawawi/go,golang/go