Update simpleaggregatefunction.md

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@ -15,7 +15,7 @@ Currently, the following aggregate functions are supported:
- [`groupBitOr`](../../query_language/agg_functions/reference.md#groupbitor) - [`groupBitOr`](../../query_language/agg_functions/reference.md#groupbitor)
- [`groupBitXor`](../../query_language/agg_functions/reference.md#groupbitxor) - [`groupBitXor`](../../query_language/agg_functions/reference.md#groupbitxor)
- Type of the `SimpleAggregateFunction(func, Type)` is `Type` itself, so you do not need to apply functions with `-Merge`/`-State` suffixes. - Values of the `SimpleAggregateFunction(func, Type)` look and stored the same way as `Type`, so you do not need to apply functions with `-Merge`/`-State` suffixes.
- `SimpleAggregateFunction` has better performance than `AggregateFunction` with same aggregation function. - `SimpleAggregateFunction` has better performance than `AggregateFunction` with same aggregation function.
**Parameters** **Parameters**