Support site Manage Macros page has links to 3 important pages in the manual

@LWinterberg

Note carefully that the **Manage Macros** page on the Support site has links to three very important pages in the old Audacity Manual for scripting commands i.e. all the commands that can be used in macros.


The pages are:
1. https://manual.audacityteam.org/man/scripting_reference.html
2. https://manual.audacityteam.org/man/extra_menu_scriptables_i.html
3. https://manual.audacityteam.org/man/extra_menu_scriptables_ii.html

This useful Manual page is also referenced:
https://manual.audacityteam.org/man/manage_presets.html

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I raise this because if the manual is deprecated in a later release (possible or likely for Audacity 4.0) access to the valuable information on these pages would likely be lost.

Therefore it would seem important to transfer the content of those pages to the Support site.