Emacs manual "Replacement Commands", added link request

[Martin Lorentzson <Martin.Lorentzson@telia.com>]

This is GNU Emacs 21.2.1 (i686-pc-linux-gnu).

The Emacs manual, chapter "Replacement Commands" mentions Transient
Mark mode as a generic way to make replacement commands operate on the
region as opposed to the buffer.  However, no link is provided to the
"Transient Mark Mode" chapter.  I think such a link should be added.

Here's a diff against search.texi, revision 1.33 from the Savannah CVS
archive:

*** /home/martin/src/emacs/search.texi.org	Wed Jul  3 20:54:52 2002
--- /home/martin/src/emacs/search.texi	Wed Jul  3 20:55:53 2002
***************
*** 798,808 ****
  of the pattern and asks you whether to replace it.
  
    The replace commands normally operate on the text from point to the
! end of the buffer; however, in Transient Mark mode, when the mark is
! active, they operate on the region.  The replace commands all replace
! one string (or regexp) with one replacement string.  It is possible to
! perform several replacements in parallel using the command
! @code{expand-region-abbrevs} (@pxref{Expanding Abbrevs}).
  
  @menu
  * Unconditional Replace::  Replacing all matches for a string.
--- 798,809 ----
  of the pattern and asks you whether to replace it.
  
    The replace commands normally operate on the text from point to the
! end of the buffer; however, in Transient Mark mode (@pxref{Transient Mark}),
! when the mark is active, they operate on the region.  The replace
! commands all replace one string (or regexp) with one replacement
! string.  It is possible to perform several replacements in parallel
! using the command @code{expand-region-abbrevs} (@pxref{Expanding
! Abbrevs}).
  
  @menu
  * Unconditional Replace::  Replacing all matches for a string.