docs/165250: "5.5.4.3 Upgrading Ports using Portmanager" should be clearer about flags

[bcr at FreeBSD.org]

Synopsis: "5.5.4.3 Upgrading Ports using Portmanager" should be clearer about flags

Responsible-Changed-From-To: freebsd-doc->bcr
Responsible-Changed-By: bcr
Responsible-Changed-When: Sun Feb 19 21:06:14 UTC 2012
Responsible-Changed-Why: 
I will get this fixed.

http://www.freebsd.org/cgi/query-pr.cgi?pr=165250