Update CHANGELOG.md

Added explanation about a specific PR

Author: melvynator

CHANGELOG.md

@@ -41,7 +41,7 @@
 * Gives the possibility to truncate specific tables from a database, filtered with the `LIKE` keyword. [#78597](https://github.com/ClickHouse/ClickHouse/pull/78597) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
 * Support `_part_starting_offset` virtual column in `MergeTree`-family tables. This column represents the cumulative row count of all preceding parts, calculated at query time based on the current part list. The cumulative values are retained throughout query execution and remain effective even after part pruning. Related internal logic has been refactored to support this behavior. [#79417](https://github.com/ClickHouse/ClickHouse/pull/79417) ([Amos Bird](https://github.com/amosbird)).
 * Add functions `divideOrNull`,`moduloOrNull`, `intDivOrNull`,`positiveModuloOrNull` to return NULL when right argument is zero. [#78276](https://github.com/ClickHouse/ClickHouse/pull/78276) ([kevinyhzou](https://github.com/KevinyhZou)).
-* TODO: WTF is that? Explain it in a way your gradma will understand. Support for Iceberg partition pruning bucket transform. [#79262](https://github.com/ClickHouse/ClickHouse/pull/79262) ([Daniil Ivanik](https://github.com/divanik)).
+* Add [`icebergHash`](https://iceberg.apache.org/spec/#appendix-b-32-bit-hash-requirements) and [`icebergBucketTransform`](https://iceberg.apache.org/spec/#bucket-transform-details) functions. Support data files pruning in `Iceberg` tables partitioned with [`bucket transfom`](https://iceberg.apache.org/spec/#partitioning). [#79262](https://github.com/ClickHouse/ClickHouse/pull/79262) ([Daniil Ivanik](https://github.com/divanik)).
 
 #### Experimental Feature
 * Hive metastore catalog for Iceberg datalake. [#77677](https://github.com/ClickHouse/ClickHouse/pull/77677) ([scanhex12](https://github.com/scanhex12)).