[tldoc] tiny mac tweaks for tl guide

[Karl Berry]

Hi TL translators - Dick Koch reviewed the Mac-related bits in the TL
guide, and I made the following changes. Also, Siep has been updating
screenshots, so I rebuilt the English html/pdf too.

I don't have any other known-pending changes ... --thanks, karl.

--- texlive-en.tex	(revision 62272)
+++ texlive-en.tex	(working copy)
@@ -90,7 +90,7 @@
 \item For Unix, the installation script is \filename{install-tl}; on
   Windows, one should instead invoke \filename{install-tl-windows}.
   The installer will operate in a graphical mode given the option
-  \code{-gui} (default for Windows and \MacOSX), or a text mode given
+  \code{-gui} (default for Windows and older \MacOSX), or a text mode given
   the option \code{-gui=text} (default for everything else).
 
 \item One of the installed items is the `\TL\ Manager' program,
@@ -559,8 +559,8 @@
 We recommend using the native Mac\TeX\ installer instead of the \TL\
 installer on \MacOSX, because the native installer makes a few
 Mac-specific adjustments, in particular to allow easily switching
-between the various \TeX\ distributions for \MacOSX\ (Mac\TeX, Fink,
-MacPorts, \ldots) using the so-called \TeX{}Dist data structure.
+between different \TL\ releases on Macs, using the so-called \TeX{}Dist
+data structure.
 
 Mac\TeX\ is firmly based on \TL, and the main \TeX\ trees and binaries
 are precisely the same.  It adds a few extra folders with Mac-specific
@@ -950,7 +950,7 @@
 
 \begin{ttdescription}
 \item[-gui] Use the \GUI{} installer if possible. This requires
-  Tcl/Tk version 8.5 or higher. This is distributed with \MacOSX, until
+  Tcl/Tk version 8.5 or higher. This was distributed with \MacOSX, until
   Monterey; after that, you'll need to install Tcl/Tk yourself, if you
   don't choose to use the Mac\TeX\ installer. Tcl/Tk is
   distributed with \TL{} on Windows. The legacy options