Merge pull request #739 from TomHAnderson/docs/schema_assets_filter

@ittmann fix from #731

docs/en/configuration.rst

@@ -293,7 +293,8 @@ module.
 How to Exclude Tables from a Schema Diff
 ----------------------------------------
 
-The "schema_assets_filter" option can be used to exclude certain tables from being created or deleted in a schema update:
+The "schema_assets_filter" option can be used to exclude certain tables from being deleted in a schema update.
+It should be set with a filter callback that will receive the table name and should return `false` for any tables that must be excluded and `true` for any other tables.
 
 .. code:: php
 
@@ -302,7 +303,7 @@ The "schema_assets_filter" option can be used to exclude certain tables from bei
             'configuration' => [
                 'orm_default' => [
                     'schema_assets_filter' => fn (string $tableName): bool => (
-                        in_array($tableName, ['migrations', 'doNotRemoveThisTable']);
+                        ! in_array($tableName, ['doNotRemoveThisTable', 'alsoDoNotRemoveThisTable'])
                     ),
                 ],
             ],