wlanstat(8): Rename from wlanstats(8) to keep consistency

[lwhsu]

Summary

wlanstat(8): Rename from wlanstats(8) to keep consistency

All the status and statistics utilties in base are ending with "stat",
the only exception is mailstats(8) but that's from sendmail.

Sponsored by:	The FreeBSD Foundation

Per discussion in the wireless monthly call and matrix group.

[ziaee]

Will this need any adjusting package base?

[lwhsu]

In D52724#1204536, @ziaee wrote:

Will this need any adjusting package base?

I don't think so, at least I am not aware anything tightly bound to the wlanstats name.