fix typo on runscript man page

The example code had an invalid checkpath option (--dir instead of
--directory) and a mode that does not make sense for directories (664
instead of 775).

X-Gentoo-Bug: 481034
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=481034

man/runscript.8

@@ -471,7 +471,7 @@ start_pre()
 		# stop_post.
 	fi
     # Ensure that our dirs are correct
-    checkpath --dir --owner foo:foo --mode 0664 \\
+    checkpath --directory --owner foo:foo --mode 0775 \\
 	/var/run/foo /var/cache/foo
 }