go.dev/_content/blog: update fuzzing terminology
go.dev/_content/blog: update fuzzing terminology

Updates golang/go#49185

Change-Id: I9b07c0e0a1c034dc49f86c28a9e336458be18bab
Reviewed-on: https://go-review.googlesource.com/c/website/+/363514
Trust: Katie Hockman <e321a8fd89c4908465ddaf8d5d0d62480efacb63@golang.org>
Run-TryBot: Katie Hockman <e321a8fd89c4908465ddaf8d5d0d62480efacb63@golang.org>
TryBot-Result: Go Bot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Website-Publish: DO NOT USE <d181b7fea0ec87c86ba5a890ab716db52498e3ba@google.com>
Reviewed-by: Dmitri Shuralyov <d181b7fea0ec87c86ba5a890ab716db52498e3ba@golang.org>

golang/website,golang/website,golang/website,golang/website,golang/website,golang/website,golang/website