fix(v2): broken link

Author: jstirnaman

content/shared/influxdb-v2/query-data/influxql/functions/transformations.md

@@ -1609,7 +1609,7 @@ SELECT DERIVATIVE(<function> ([ * | <field_key> | /<regular_expression>/ ]) [ ,
 The advanced syntax requires a [`GROUP BY time()` clause](/influxdb/version/query-data/influxql/explore-data/group-by/#group-by-time-intervals) and a nested InfluxQL function.
 The query first calculates the results for the nested function at the specified `GROUP BY time()` interval and then applies the `DERIVATIVE()` function to those results.
 
-The `unit` argument is an integer followed by a [duration](//influxdb/version/reference/glossary/#duration) and it is optional.
+The `unit` argument is an integer followed by a [duration](/influxdb/version/reference/glossary/#duration) and it is optional.
 If the query does not specify the `unit` the `unit` defaults to the `GROUP BY time()` interval.
 Note that this behavior is different from the [basic syntax's](#basic-syntax-1) default behavior.