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Update docs/en/operations/settings/settings.md

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Co-authored-by: olgarev <56617294+olgarev@users.noreply.github.com>
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@ -370,7 +370,7 @@ This setting is applied to `INSERT ... VALUES` queries.
## insert_null_as_default {#insert_null_as_default}
Enables the insertion of [default values](../../sql-reference/statements/create/table.md#create-default-values) instead of [NULL](../../sql-reference/syntax.md#null-literal) into clumns with not [nullable](../../sql-reference/data-types/nullable.md#data_type-nullable) data type.
Enables or disables the insertion of [default values](../../sql-reference/statements/create/table.md#create-default-values) instead of [NULL](../../sql-reference/syntax.md#null-literal) into columns with not [nullable](../../sql-reference/data-types/nullable.md#data_type-nullable) data type.
This setting is applied to `INSERT ... SELECT` [queries](../../sql-reference/statements/insert-into.md#insert_query_insert-select). Note that `SELECT` subqueries may be concatenated with `UNION ALL` clause.
If column type is nullable then `NULL` values are inserted as is regardless of this setting.
If column type is not nullable and this setting is disabled, then inserting `NULL` causes an exception.