doc: remove mention of ActiveState for Perl and Tcl on Windows

Replace with Strawberry Perl and Magicsplat Tcl.

Reported-by: Yasir Hussain

Discussion: https://postgr.es/m/CAA9OW9fAAM_WDYYpAquqF6j1hmfRMzHPsFkRfP5E6oSfkF=dMA@mail.gmail.com

Backpatch-through: 12

doc/src/sgml/install-windows.sgml

@@ -190,14 +190,12 @@ $ENV{MSBFLAGS}="/m";
     </varlistentry>
 
     <varlistentry>
-     <term><productname>ActiveState Perl</productname></term>
+     <term><productname>Strawberry Perl</productname></term>
      <listitem><para>
-      ActiveState Perl is required to run the build generation scripts. MinGW
+      Strawberry Perl is required to run the build generation scripts. MinGW
       or Cygwin Perl will not work. It must also be present in the PATH.
       Binaries can be downloaded from
-      <ulink url="https://www.activestate.com"></ulink>
-      (Note: version 5.8.3 or later is required,
-      the free Standard Distribution is sufficient).
+      <ulink url="https://strawberryperl.com"></ulink>.
      </para></listitem>
     </varlistentry>
 
@@ -211,10 +209,11 @@ $ENV{MSBFLAGS}="/m";
 
    <variablelist>
     <varlistentry>
-     <term><productname>ActiveState TCL</productname></term>
+     <term><productname>Magicsplat Tcl</productname></term>
      <listitem><para>
-      Required for building <application>PL/Tcl</application> (Note: version
-      8.4 is required, the free Standard Distribution is sufficient).
+      Required for building <application>PL/Tcl</application>.
+      Binaries can be downloaded from
+      <ulink url="https://www.magicsplat.com/tcl-installer/index.html"></ulink>.
      </para></listitem>
     </varlistentry>