[PATCH] tools: fixed typo in wg-show usage

[Jason A. Donenfeld]

Hi Dan,

Thanks. The typo was in the opposite place, which I fixed and give you
credit for the report:

https://git.zx2c4.com/WireGuard/commit/?id=309fbe630fccc397e13d57956f0847fc7a2eaf90

This will be part of the next snapshot.

Jason