doc: fix careless document miss for term 'Close changeset' in glossary
there is no term 'Changeset, close' in glossary.
'Close changeset' seems to have to be linked not to 'Branch, closed',
but to 'Head, closed branch', because only the latter explains about
"the changeset that marks a head as no longer interesting".
--- a/mercurial/help/glossary.txt Mon Apr 23 00:30:45 2012 +0900
+++ b/mercurial/help/glossary.txt Mon Apr 23 00:33:09 2012 +0900
@@ -135,7 +135,7 @@
See 'Changeset, child'.
Close changeset
- See 'Changeset, close'.
+ See 'Head, closed branch'
Closed branch
See 'Branch, closed'.