Polished the recent change to the manpage.

docs/man/nginx.8

diff --git a/docs/man/nginx.8 b/docs/man/nginx.8
index 70d82d4..1f4dc89 100644
--- a/docs/man/nginx.8
+++ b/docs/man/nginx.8
@@ -88,7 +88,9 @@
 checks the configuration file syntax and then tries to open files
 referenced in the configuration file.
 .It Fl T
-Same as -t, but additionally dumps configuration files to stdout.
+Same as
+.Fl t ,
+but additionally dump configuration files to standard output.
 .It Fl V
 Print the
 .Nm