children: use hg reST role for example

hgext/children.py

@@ -1,49 +1,49 b''
 # Mercurial extension to provide the 'hg children' command
 #
 # Copyright 2007 by Intevation GmbH <[e-mail]>
 #
 # Author(s):
 # Thomas Arendsen Hein <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 '''command to display child changesets (DEPRECATED)
 
-This extension is deprecated. You should use `hg log -r "children($revision)"`
-instead.
+This extension is deprecated. You should use :hg:`log -r
+"children(REV)"` instead.
 '''
 
 from mercurial import cmdutil
 from mercurial.commands import templateopts
 from mercurial.i18n import _
 
 
 def children(ui, repo, file_=None, **opts):
     """show the children of the given or working directory revision
 
     Print the children of the working directory's revisions. If a
     revision is given via -r/--rev, the children of that revision will
     be printed. If a file argument is given, revision in which the
     file was last changed (after the working directory revision or the
     argument to --rev if given) is printed.
     """
     rev = opts.get('rev')
     if file_:
         ctx = repo.filectx(file_, changeid=rev)
     else:
         ctx = repo[rev]
 
     displayer = cmdutil.show_changeset(ui, repo, opts)
     for cctx in ctx.children():
         displayer.show(cctx)
     displayer.close()
 
 cmdtable = {
     "children":
         (children,
          [('r', 'rev', '',
            _('show children of the specified revision'), _('REV')),
          ] + templateopts,
          _('hg children [-r REV] [FILE]')),
 }