[ trivial ] fix typo in downgrade floor

Author: andf-mongodb

source/includes/extracts-4.4-changes.yaml

@@ -324,7 +324,7 @@ content: |
    .. warning:: Downgrade Floor
 
 
-      If you need to downgrade form version 4.4, downgrade to 4.2.6 or
+      If you need to downgrade from version 4.4, downgrade to 4.2.6 or
       a later version. You cannot downgrade to 4.2.5 or an earlier
       version.
 ---