Update now.sql (#98)

Author: GtheSheep

macros/calendar_date/now.sql

@@ -1,3 +1,3 @@
 {%- macro now(tz=None) -%}
-{{ dbt_date.convert_timezone(current_timestamp(), tz) }}
+{{ dbt_date.convert_timezone(dbt.current_timestamp(), tz) }}
 {%- endmacro -%}