phases: add resync example to help topic stable

phases: add resync example to help topic

--- a/mercurial/help/phases.txt	Mon Jan 30 16:04:14 2012 -0600
+++ b/mercurial/help/phases.txt	Mon Jan 30 16:37:15 2012 -0600
@@ -77,4 +77,8 @@
 
      hg log --template "{rev} {phase}\n"
 
+ - resynchronize draft changesets relative to a remote repository::
+
+     hg phase -fd 'outgoing(URL)' 
+
 See :hg:`help phase` for more information on manually manipulating phases.