Fixed wrong name

Author: mrotteveel

src/docs/asciidoc/release_notes.adoc

@@ -568,7 +568,7 @@ we recommend to always use `null` for `catalog`
 * `FBTableStatisticsManager` (experimental feature)
 ** For schema-bound tables, the key of the map returned by `getTableStatistics()` is a fully qualified and quoted table reference (i.e. `<quoted-schema>.<quoted-table-name>`).
 For schemaless tables (Firebird 5.0 and older, or tables that were not found), the key is still the unquoted `<table-name>`.
-** The static method `toTableReference(String schema, String tableName)` can be used to create a table reference in the same format as the key of the map returned by `getTableStatistics()`.
+** The static method `toKey(String schema, String tableName)` can be used to create a table reference in the same format as the key of the map returned by `getTableStatistics()`.
 The `schema` can be `null` or empty string for schemaless tables (i.e. Firebird 5.0 or older)
 ** The `TableStatistics` object received additional accessors:
 *** `schema()` with the schema, or empty string for schemaless (Firebird 5.0 or older) or if the table was not found