misc/57301: A typo in "Using sysctl", NetBSD guide

[nan%chinadtrace.org@localhost]

>Number:         57301
>Category:       misc
>Synopsis:       A typo in "Using sysctl", NetBSD guide
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    misc-bug-people
>State:          open
>Class:          doc-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Mar 27 09:35:00 +0000 2023
>Originator:     Nan Xiao
>Release:        
>Organization:
>Environment:
>Description:
Hi NetBSD community,

In https://www.netbsd.org/docs/guide/en/chap-tuning.html#tuning-system-sysctl:

> As an example, lets say a system with ...

It should be:

> ... let's say ...

Thanks!

Best Regards
Nan Xiao
>How-To-Repeat:

>Fix: