[TASK] Add info about how to support DDEV (#657)

Author: mabolek

Documentation/Installation/Install.rst

@@ -20,6 +20,9 @@ Installation instructions <t3start12:install>`.
 
 ..  youtube:: HW7J3G1SqZw
 
+..  note::
+    Like TYPO3, DDEV is open source software that exists because of the generosity of community members and sponsors. Read more about `how to support DDEV <https://ddev.com/support-ddev/>`__.
+
 Pre-Installation Checklist
 --------------------------