minor manpage fix

[Ruslan Ermilov]

On Wed, Apr 05, 2017 at 11:16:27AM +0200, A. Schulze wrote:
> hello
> 
> by buildsystem warn about a minor glitch in nginx.8
> patch attached

"\-" is a "minus sign in the current font", while "-" is
a dash character, which is the correct character for the
utility arguments.

Applying this patch and generating a PostScript output
would generate an example output than cannot be pasted
back to the shell.

> Description: fix minor manpage errors
> Author: A. Schulze
> ---
> This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
> Index: nginx-1.11.13/man/nginx.8
> ===================================================================
> --- nginx-1.11.13.orig/man/nginx.8
> +++ nginx-1.11.13/man/nginx.8
> @@ -180,8 +180,8 @@ Test configuration file
>  .Pa ~/mynginx.conf
>  with global directives for PID and quantity of worker processes:
>  .Bd -literal -offset indent
> -nginx -t -c ~/mynginx.conf \e
> -	-g "pid /var/run/mynginx.pid; worker_processes 2;"
> +nginx \-t \-c ~/mynginx.conf \e
> +	\-g "pid /var/run/mynginx.pid; worker_processes 2;"
>  .Ed
>  .Sh SEE ALSO
>  .\"Xr nginx.conf 5